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Levels and Predictors of Self-Care Among Patients with Hypertension in Pakistan

Authors Ajani K, Gowani A, Gul R, Petrucka P

Received 16 December 2020

Accepted for publication 19 February 2021

Published 25 March 2021 Volume 2021:14 Pages 1023—1032

DOI https://doi.org/10.2147/IJGM.S297770

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Dr Scott Fraser


Khairulnissa Ajani,1 Ambreen Gowani,1 Raisa Gul,1,2 Pammla Petrucka3

1School of Nursing, Aga Khan University, Karachi, Pakistan; 2School of Nursing, Shifa Tameer-e-Millat University, Islamabad, Pakistan; 3College of Nursing, University of Saskatchewan, Saskatoon, Canada

Correspondence: Khairulnissa Ajani
Aga Khan University School of Nursing, P.O. Box 3500, Stadium Road, Karachi, Pakistan
Email [email protected]

Background: Globally, hypertension is the leading non-communicable disease and strongest predictor of cardiovascular diseases. To mitigate and prevent hypertension-related complications, self-care behavior adaptation has proven to be vital. In this study, we examined the six clinically prescribed levels of self-care as prescribed by the Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure and its predictors among a select sample of hypertensive individuals in Karachi, Pakistan.
Methods: This study reports the cross-sectional survey of a sequential mixed method study which assessed the levels of self-care of hypertensive individuals residing in an urban cosmopolitan setting within Karachi Pakistan. Four hundred and two patients were screened using the H-SCALE questionnaire, while socio-demographic predictors of self-care and level of knowledge of hypertension were identified using a study-specific checklist. Self-care was assessed against six clinical domains including medication adherence, diet, weight management, physical activity, and abstinence from alcohol.
Results: Participants were recruited from the two largest tertiary care hospitals in Karachi. Good knowledge about hypertension, including its causes, management, and complications was reported by 4.47% of the participants. Highest levels of self-care adherence were found for abstinence from alcohol (100%), smoking cessation (83.33%), and medication compliance (71.89%), whereas lowest levels were found for diet (27.11%), and physical activity (24.88%). In terms of predictors for self-care, age, male gender, and self-checking of blood pressure at home, followed by the level of education were the most common predictors for each self-care behavior in the given population.
Conclusion: Overall knowledge of self-care for hypertension is sub-optimal among hypertensive patients in Pakistan which is reflected in their behaviors. There is a need to introduce healthcare educational programs in Pakistan which can improve self-care behaviors of hypertensive individuals and potentially reduce the prevalence of associated cardiovascular diseases and its complications.

Keywords: hypertension, self-care management, cross-sectional study, Pakistan

Background

The global demographic shift towards ageing, rapid urbanization, and adoption of unhealthy lifestyle behaviors is significantly affecting trends in human health, generally,1 and in the emergence of non-communicable diseases including hypertension, specifically.2 Hypertension, a complex and universal health issue, is pervasive within the adult population, bringing an array of associated health issues that may result in a major burden for hypertensive individuals. According to the World Health Organization, one in eight deaths globally is caused by hypertension making it the third most common cause of mortality. Approximately five billion patients are afflicted with hypertension globally.1 In the United States of America, with a 24% growth rate and $3.2 trillion of the total spending on healthcare, 40% of hypertensive individuals (50 million people) remain untreated.3 Likewise, in the Mediterranean region, 26% of the total population is affected by hypertension.4 In developing countries, such as within the African region, hypertension has become concerning, with Ethiopia reporting an overall prevalence of 19.6%.5

Several influencing factors potentiate hypertension among individuals, such as nutritional transitions, lack of healthcare awareness, low economic status, inadequate healthcare systems, and adoption of increasingly sedentary lifestyles, which are factors more prevalent in the low- and middle-income countries (LMIC).6 Negligence in treatment and care of hypertension may result in cardiac, renal, and visual disorders. Hypertension is preventable, with a 10 mm Hg reduction in systolic blood pressure (BP) resulting in a 32% reduction in stroke risk and 14% relative reduction in ischemic heart disease risk.7

To better control hypertension and prevent coronary vascular disease, experts have stressed the implementation of interventions such as salt restriction, body weight reduction, stress management, exercise, and alcohol intake reduction. Although national prevalence ratios differ depending upon the economy, social behaviors, and the population’s level of healthcare awareness, hypertension has become a prevailing global medical condition.9

In Pakistan, the prevalence of hypertension is under-reported due to the dearth of large population-based surveys. A cross-sectional survey9 reported an estimated prevalence of hypertension to be 26% in Pakistan, with a dominance of patients residing in the urban setting. In addition, Prospective Rural Urban Epidemiology (PURE) study8 found the combined prevalence of hypertension in Pakistan, Bangladesh and India hovering around 40%.

To mitigate and prevent hypertension-related complications, self-care behavior adaptation is the most important and vital activity in ultimately reducing the risk factors associated with hypertension. The self-care regime consists of lifestyle modification, dietary changes, and adherence to medication. The lifestyle modification requires changes in daily routines involving proper diet, alcohol and smoking abstinence, exercise, and proper sleep.10 Past studies have shown effectiveness of self-care behaviors in reduction of BP and associated complications, plus escalation of the efficacy of medication and overall health regimes.4,5,30,36 Given the potential substantial benefits of self-care, novel approaches, and interventions are required to enable a robust and responsive system that can assist in promoting self-care behavior among individuals with hypertension.

Although existing pharmacologic therapies are effective, hypertension control over time is insufficient with medication therapy alone.11 The main purpose of the self-care treatment and guidelines is to assist patient in BP control through sustainable non-pharmacological treatment. Various contributing factors may hinder hypertension control, but, most significantly, non-adherence towards self-care behaviors or lack of situational awareness respecting their condition will ultimately result in premature mortality and/or adverse health outcomes. Although over the last decade several medically driven hypertension treatment and management guidelines have been introduced, most have been rejected, or poorly adhered to, by hypertension-affected individuals.12 Non-adherence arises due to sub-factors such as lack of knowledge, understanding of healthcare interventions, and resources, as well as rigid mentality due to dominant of socio-cultural beliefs.13 The rejection and lack of uptake of self-care behaviors has contributed to early deaths, unhealthy lifestyles, chronic heart disease, and renal failure. Patients with risk factors for hypertension tend to avoid the beneficial self-care treatment primarily because of lack of awareness which, ultimately, results in life-threatening or life-altering medical conditions or often death.

The PURE study reports a lack of quality data relating to cardiovascular risk factors and diseases from South Asia, a region that experienced a 73% increase in healthy life years lost due to ischemic heart disease between 1990 and 2010. These studies have allowed a better understanding of cardiovascular disease risk factors indigenous to the South Asian population along with conventional risk factors. The study recommends that culturally sensitive interventions geared towards treating risk factors identified in these studies are needed to fully realize the true potential of these epidemiologic studies.8

In contrast with traditional patient education, which focuses mainly on defining problems, self-management programs focus on developing problem-solving skills to help patients make decisions, take appropriate actions, and modify these actions under different circumstances.14 Self-management programs were found to decrease systolic BP by 5 mmHg and diastolic BP by 4.3 mmHg15 and increase cost-effectiveness.16

The aim of this paper is to report the level of self-care and its predictors among hypertensive individuals in Pakistan. Secondly, the study identifies the foundations and specifications required to design an intervention to realize maximum efficiency and optimal outcomes related to hypertension control through a self-care approach.

Methods

This paper reports the results of a cross-sectional survey of a parent sequential mixed-method (QUANTI-quali) study designed to assess self-care behaviors and influencing factors among Pakistani hypertensive patients. The first phase of the study was a cross-sectional survey followed by qualitative in-depth interviews, while the second phase included developing and feasibility testing of an intervention.

The study was conducted at two tertiary care hospitals of Karachi. Both hospitals were similar with respect to cardiac services and provided care across the spectrum of the socio-economically and ethnically diverse population of Karachi. The true prevalence of hypertension self-care among population of Karachi is unknown. Therefore, it was assumed to be 0.5 with an alpha set at 5% and within 5% of bound of error of estimation, the sample of 385 patients was required for the cross-sectional phase of the study. The sample was divided between the two settings on a 40:60 ratio based on the volume of patient influx in each hospital. Patients were recruited from the outpatient clinics between March and November 2019 based on the following criteria: adult (aged ≥18), a diagnosis of primary hypertension for at least six months with prescribed anti-hypertensive medications to ensure documented hypertension, resident of Karachi, and ability to give informed consent. Patients identified with language barrier (inability to read and understand Urdu), documented malignancy, and physical or cognitive disability were excluded from the study.

Ethical approvals from the Ethics Review Committee and the Institutional Review Board of the respective settings were obtained prior to data collection (4712-SON-ERC-17 and IRD_IRB_2017_06_008). Information about the study and key steps of the protocol were shared with the physicians and clinic staff, including the nurses and unit receptionists, in the cardiology out-patient clinics of selected hospitals. The PI accessed the out-patient clinics one day before the data collection and screened patients scheduled for next day against the inclusion/exclusion criteria from the medical records. While waiting for their clinical appointments, eligible patients were approached by the PI who explained the purpose, procedure, and time of data collection. Those who volunteered to participate and gave a written consent were informed that confidentiality would be maintained by using a unique study ID. They were assured that refusal to participate would not affect their treatment plan at the hospital.

A self-developed checklist for the purpose of the study captured information on participants’ demographic and socio-economic variables. The checklist assessed the participants’ knowledge on the definition, causes and complications of hypertension. Self-care behaviors of the hypertensive patients were assessed using the H-SCALE developed by Warren-Findlow and Seymour17 to test the prevalence rates of hypertension self-care activities amongst African Americans. The H-SCALE assesses self-care practices as outlined in the Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure (JNC 8). It recommends 6 self-care behaviors: (1) adhering to medication regimens; (2) engaging in physical activity; (3) following a healthy, low-salt and low-fat diet similar to the Dietary Approaches to Stop Hypertension (DASH) diet; (4) maintaining a healthy weight; (5) reducing alcohol intake; and (6) avoiding tobacco.

The tool was translated into Urdu by two bilingual experts who were proficient in the source (English) as well as the target (Urdu) language. The finalized Urdu version was sent to four experts for content validation who rated the relevance and clarity of the tool on a Likert scale (1–4) and provided suggestions for the items which were rated ≤2. The overall content validity index (CVI) for the H-SCALE tool was calculated to be 0.899 for clarity and 0.951 for relevance. Although the tool is typically a self-administered questionnaire, due to the low literacy rate in Pakistan data, was collected via a structured interviewing technique conducted by the PI and a trained data collector. The data collection approach was piloted with 10% of the sample size (ie, 40 patients) who were excluded from the final analysis. Discrepancies in the way of asking questions amongst the data collectors were resolved by mutual discussion.

The data collection forms were checked for clarity, accuracy, and completeness at the time of data collection. Each data form was dual entered and then analyzed with the Statistical Package for Social Sciences (SPSS™) Version 20.0.

The dependent variable was the dichotomized total score of the constructs of the H-SCALE while the socio-demographic characteristics of the participants (ie, age, gender, education, marital status, living situation, and chronicity of the disease) were taken as the independent variables influencing self-care. Means and standard deviations or medians and inter-quartile ranges (IQR) were computed for continuous variables depending upon the distribution of the variables, whereas frequencies and percentages were calculated for categorical variables. Logistic regression was applied to determine associations between the dependent variable and independent variables.

Results

Participants’ Characteristics

The median age of the study’s 402 participants was 55 (ranging from 48 to 65) years. Approximately two thirds of study participants (66.17%) were female, and most participants (79.85%) were married and had some schooling (67.16%). Approximately half (54.73%) of the participants knew how to self-check their blood pressure at home. Of those knowing how to self-check blood pressure, 46.8% indicated checking only when symptoms appeared. Full participant characteristics are presented in Table 1.

Table 1 Participants’ Socio-Demographic Characteristics and the Level of Knowledge (n=402)

Knowledge Related to Hypertension

Overall knowledge regarding hypertension was good (based on the pre-determined cut-off score) among approximately 4% of patients in the study. Across all subcategories, patients’ awareness about complications of hypertension was relatively high (17.91%) compared to knowledge of its definition (7.96%), risk factors (11.69%), and causes (9.95%). Level of knowledge in each subcategory is presented in Table 2.

Table 2 Knowledge Related to Hypertension

Adherence to Self-Care

The highest levels of adherence were observed for abstinence from alcohol (100%), smoking cessation (83.33%), and medication compliance (71.89%), whereas the lowest levels of adherence were found for diet (27.11%) and physical activity (24.88%). Table 3 presents the level of adherence to each self-care behavior accessed via H-SCALE.

Table 3 Adherence to Self-Care Behavior as Measured on H-SCALE

Univariate Analysis

At the univariate level, age, gender, education, and home-based blood pressure monitoring were found to be statistically significant in association with dietary self-care behavior. For medication adherence, age, gender, educational status, and blood pressure checking at home were significantly associated. With regard to physical activity, age, gender, marital status, and family type were statistically significant. Age, educational status, marital status, employment, and blood pressure checking at home were statistically significant at the univariate level for weight management amongst participants. For smoking cessation, age, gender, education, marital status, and home-based blood pressure monitoring showed statistically significant association.

Multivariate Analysis

At the multi-variable level, after controlling for age (p=0.001), education status (p=0.000), blood pressure checking at home (p=0.026), employment status (p=0.005), and knowledge of hypertension (p=0.019) were significantly associated with diet regimen. Similarly, gender (0.002) and blood pressure checking at home (0.038) remained key predictors of adherence to medication. For physical activity, age (p=0.016) and gender (p=0.000) retained statistical significance, while for weight management education status (p= 0.018) and blood pressure checking at home (p= 0.06) were statistically significantly associated. Age (p=0.008) and gender (p=0.015) were found to have significant association with adherence to non-smoking behavior in this study. The Hosmer-Lemeshow goodness of fit statistic for each statistical model and values of Cronbach alpha for each construct are presented under each model in Tables 4 and 5.

Table 4 Unadjusted Associations Between Different Socio-Demographic Characteristics and Self-Care Constructs on H-SCALE

Table 5 Adjusted Associations Between Socio-Demographic Variables and Self-Care Behaviors on H-SCALE

Discussion

This study provides valuable insights about the knowledge, adherence to self-care, and its predictors among Pakistani adult patients with hypertension. A limited number of patients exhibited overall knowledge and awareness regarding hypertension. Across all subcategories, patients’ awareness about complications of hypertension was relatively high compared to their knowledge of what hypertension is and how is it caused. The lack of awareness among the participants in the current study is consistent with findings of previous Pakistani studies, which also reported inadequate awareness about the risk factors related to NCDs affecting patients’ adherence to lifestyle modifications.18,19 In contrast, studies in developed countries like China20 and the USA21 reported higher awareness and knowledge among patients who were living with hypertension, possibly attributable to differences in literacy rates of the population, as more than half of the participants in our study had no education which technically meant that they could not read and write their names. Despite widespread prevalence of hypertension, and its prediction to rise steeply,22 previous and current studies have shown that low patient awareness about the hypertension, its risks, and complications is ubiquitous.

Many studies23–25 report that the patients have poor to average knowledge regarding hypertension, despite of the range of sources of information available. Common factors impacting knowledge uptake with regards to Pakistan may be illiteracy and poverty. Being able to read and write privileges participants’ access to education material available on the internet. It also gives the patient the confidence to discuss their learning needs with the health providers, whereas those who are not educated, tend to learn from their own experiences through a process of trial and error which may take longer than directly acquiring information from reliable sources. This finding aligns with the previous argument26,27 that self-care behavior can be learned experientially as well as taught to all irrespective of educational status. Other researchers have also pointed out that the existence of a communication gap between the patients and the healthcare providers regarding health education leads to a trend of low awareness regarding self-care practices.19,28 Therefore, there is a need in this context to develop stronger health education strategies which make basic knowledge of the disease accessible to all, regardless of demand and capacity. One such strategy, which may work in the context of LMIC, is to establish a routine of health education sessions embedded within the clinic visit to the hospital. These sessions should be delivered by nurses, as short, individualized, and targeted interventions on patient’s needs in the language of preference of the patient. It should be built upon the existing level of knowledge of each patient based on their experience of living with hypertension.

As per the results of the study, abstinence from alcohol and smoking and adherence to medication were shown to be the highest adhered to self-care domains. All the patients reported abstinence from alcohol, which is likely due to the cultural and religious influence in which alcohol consumption is illegal and immoral. These findings align with previous studies which have shown that hypertensive patients are readily and actively involved in reduction of alcohol usage as part of self-care, ranging at a high level of adherence.29–32

Similarly, smoking is an under-reported phenomenon in Pakistan, particularly among females.33 In this study, two-thirds of the patients did not smoke, which may reflect that the majority of the participants were aware about the complications of hypertension, thus abstaining from smoking. In addition, smoking status was assessed through a self-reporting tool during a visit to the hospital that may have led to participants report “acceptable” behaviors, essentially resulting in potential reporting bias.

Medication adherence was seen in 72% of the participants amongst all socio-economic strata. Higher level of medication adherence has also been reported by previous studies19,27,30 conducted with cardiac patients where medication compliance was taken relatively seriously by the participants as compared to any other self-management behavior. Participants give importance to the prescription because they are personalized and directly written by the doctors whom they are answerable to on subsequent visits.27 The Pakistani population also has easy access to medications without prescriptions through readily available chemists. In addition, taking medications requires less effort compared to the other constructs. Moreover, the dominant culture constructs medications as the panacea to all health problems.34

Dietary practices and level of physical activity are the domains that require attention in the population studied. Diet is an essential part of self-care behavior to regulate hypertension with recommendation of a diet that is low in sodium, cholesterol, and saturated fats.9 Similar to the previous findings,4 educated patients in this study showed better adherence with diet and weight management than those who were less educated. Also, higher education was often associated with better economic status, which may increase patients’ access to healthier food choices and physical activity programs that can potentially facilitate self-care behavior.

Modification in the diet is a complex process that requires stepwise decision making. Abrupt changes in the traditional recipes can disrupt taste profiles of food, contributing to failure to adhere. In the Pakistani culture, food is replete with flavors and spices, and, importantly, sharing food is essential in socializing and maintaining relationships. It has a key role in linking family values, cultural beliefs, and individual behaviors, which makes it difficult for people to change their dietary patterns. An important aspect of their cultural beliefs includes consumption of the same food by all family members; hence, modification may be a deterrent for some people.35

Given the Pakistani context, health care workers are required to strive to advance patients’ critical thinking and to develop an understanding of the suggested behaviors, thereby improving their self-care performance. Diet in this study is primarily driven by patients’ age, education status, and employment. The Pakistani population require specific instructions from their health care providers, which are affordable, understandable, simple, and manageable for a primarily older and under-educated target group.

Physical activity is another important indicator of self-care behavior that had low compliance in the current study. Physical activity is linked to control of high blood pressure, as it also leads to weight management, emotional control, and overall good health. This study revealed that an increase in age, male gender, married, and residing in a nuclear family setting were strong predictors of adherence to physical activity. In Pakistan, there is a lack of motivation in patients for formal physical activities due to poor accessibility to gyms, parks, and walking tracks. Regular exercise is not a part of the Pakistani way of life due to laziness, ignorance, lack of time, facilities, or presence of any other chronic diseases, such as arthritis or vertigo.27

Men were more likely to be adherent to the activity regime, as culturally, they have greater access to the outdoor facilities compared to the women who are commonly confined to the house. Family systems also have the practice of the family spending the evenings together after a full day which will deter adherence. A number of studies36–38 found that physical activity was one of the most difficult self-care behaviors to gain adherence, often due to misconceptions that it is comprised only of vigorous exercise. These findings highlight the need for increased physical activity in patients as well as putting forth a clearer message regarding the importance and contributions of physical activity.

Strengths and Limitations

The current study is adequately powered through a-priori sample size calculation to detect the true prevalence of self-care behaviors among patients with hypertension in Karachi Pakistan. It also captured the vast socio-economic and ethnic diversity among the study participants by enrolling participants from two large tertiary care hospitals of Karachi. However, given the cross-sectional survey methodology, causal inferences cannot be drawn between predictors and self-care behavior, hence results shall be construed cautiously. Also, the results of the study are based on a self-reported data that was collected by the data collector, which may be subjected to bias.

Conclusion

This study revealed that dietary modifications and regular activity patterns are self-care foci that require attention to enhance an overall healthy lifestyle to combat hypertension in the Pakistani population. Health care professionals are encouraged to offer context-based individualized strategies, which are economical, affordable, and understandable by the patients to enhance self-care practices for hypertension management.

Abbreviations

BP, Blood Pressure; CVD, Cardiovascular Diseases; NHS, National Health Security; SPSS, Statistical Package for Social Sciences; IQR, Inter-Quartile Range.

Data Sharing Statement

The data used and analyzed in the current study can be made available upon request to the corresponding author.

Ethics Approval and Consent to Participate

The study has been ethically approved by the ethics committee of the Aga Khan University Hospital and the Ethical Review Board of the Indus Hospital Karachi, Pakistan. The respondents were informed about the aim of the study. The respondents provided informed consent for the cross-sectional survey as well as the in-depth interviews. This study was conducted in accordance with the declaration of Helsinki. The confidentiality and anonymity of the data was also ensured.

Acknowledgments

AH: Aamir Hameed Khan, Section of Cardiology, Department of Medicine, Aga Khan University Hospital.

Author Contributions

All authors made a significant contribution to the work reported, whether that is in the conception, study design, execution, acquisition of data, analysis and interpretation, or in all these areas; took part in drafting, revising or critically reviewing the article; gave final approval of the version to be published; have agreed on the journal to which the article has been submitted; and agree to be accountable for all aspects of the work.

Funding

All costs involved in the study were covered by the authors with no additional funding being received.

Disclosure

The authors report no conflicts of interest in this work.

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