Correction to: International Journal of STEM Education (2018) 5:42 https://doi.org/10.1186/s40594-018-0138-z

Following publication of the original article (Sawant et al., 2018), a typesetting mistake was reported. The explanation of part labels d and e have been omitted from the caption of Fig. 1. Figure 1 and its complete caption are given in this Correction article. The original article has been updated.

Fig. 1
figure 1

Percentage of student responses in each category for the three questions identified by their keywords: ac Subparts of the “easy” question, d “moderate” question, e “difficult” question. The x-axis represents categories of student responses. C Correct; PC Partially Correct; IC Incorrect; IC-RC Incorrect method, correct reason; IC-MC Incorrect reason, correct method; DrCP Doctor followed the correct procedure; SI Soap is an irritant; INC Incomplete; U Unrelated; NA Not Attempted

The publisher apologises to the authors and readers for the inconvenience.