Back to Journals » Patient Preference and Adherence » Volume 12

A new pen device for injection of recombinant human growth hormone: a convenience, functionality and usability evaluation study

Authors Sauer M, Abbotts C

Received 17 August 2017

Accepted for publication 3 October 2017

Published 27 December 2017 Volume 2018:12 Pages 27—34


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Johnny Chen

Maritta Sauer,1 Carole Abbotts2

1Global Strategic Insights, Merck KGaA, Darmstadt, Germany; 2Pharmaceutical Market Research Consultant, London, UK

Purpose: Adherence to recombinant human growth hormone (r-hGH) is critical to growth and other outcomes in patients with growth disorders, but the requirement for daily injections means that ease of use is an important factor. This study assessed the perceived ease of use and functionality of the prototype of a reusable pen injector (pen device) for r-hGH that incorporates several advanced features.
Participants and methods: Semi-structured 60-minute qualitative interviews were conducted in 5 countries with 57 health care professionals (HCPs) and 30 patients with GH deficiency/caregivers administering r-hGH to patients, including children. HCPs had to be responsible for training in the use of r-hGH pen devices and to see ≥4 r-hGH patients/caregivers per month. Patients/caregivers had to have experience with r-hGH administration for at least 6 months.
Results: Thirty-seven (65%) of HCPs described the pen device as “simple” or “easy” to use. The aluminum body was generally perceived as attractive, high quality and comfortable to hold and operate. The ease of preparation and use made it suitable for both children and adults. The ability to dial back the r-hGH dose, if entered incorrectly, was mentioned as a major benefit, because other devices need several user steps to reset. Patients/caregivers felt the pen device was easy to use and the injection-feedback features reassured them that the full dose had been given. Overall, 40 (70%) HCPs and 16 (52%) patients/caregivers were likely to recommend or request the pen device. Moreover, patients/caregivers rated the pen device higher than their current reusable pens and almost equal to the leading disposable device for ease of learning, preparation, administration and ease of use.
Conclusion: The prototype pen device successfully met its design objectives and was very well accepted by HCPs and patients/caregivers for its ease of use, appearance and functionality.

Keywords: growth hormone deficiency, qualitative interviews, injection feedback, reusable, health care professionals, patients, caregivers, adherence

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]