A Clinical Trial Comparing Ultrasound-Guided Ilioinguinal/Iliohypogastric Nerve Block to Transversus Abdominis Plane Block for Analgesia following Open Inguinal Hernia Repair [Corrigendum]

Faiz SHR, Nader ND, Niknejadi S, Davari-Farid S, Hobika GG, Rahimzadeh P. J Pain Res. 2019;12:201–207.

There were concerns over the potential inaccurate representation of data in the original Figure 3 on page 205 of the published article. The spline approach used in the original figure illustrated scores that do not exist through the interpolation of missing parameters between concrete assessment time points. Therefore, we, the authors, replaced the image with a time-to-event analysis (Kaplan-Meier) where the event was set for the request for an analgesic within the first 24 hours.

The new figure presents cumulative hazards (probability) of requesting an analgesic medication over the first 24 hours after ilioinguinal nerve block versus transverse abdomens plane block. The time-to-event analysis by the Kaplan-Meier Log-Rank test revealed no difference in analgesic requirement between the two types of blocks (P=0.912).

The correct Figure 3 is as follows.

Figure 3 The probability of request for additional parenteral analgesic drugs is shown at any given time. Abbreviation: TAP, transversus abdominis plane.