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Table 1 Questionnaire structure and scoring

From: Usability of a point-of-care diagnostic to identify glucose-6-phosphate dehydrogenase deficiency: a multi-country assessment of test label comprehension and results interpretation

Question type Number of questions Description Possible points- unweighted analysis Possible points, analysis weighted by critical errors*
Multiple choice- critical questions 4 Mutually exclusive multiple-choice questions which if missed, would lead to an incorrect test results without the user knowing 13 12
Multiple choice- noncritical questions 9 Mutually exclusive multiple-choice questions which covered background information, 9
Results interpretation 7 (5 valid results, 2 invalid results) Users were asked to read, record, and interpret predetermined G6PD results based on thresholds provided and told to assume that the results were from female patients 17** 27***
Total possible points 30 48
  1. G6PD: glucose-6-phosphate dehydrogenase
  2. * For each critical error, a weight of 3 points was assigned. For each non critical error, a weight of 1 point was assigned
  3. ** For each valid result, three points were possible: one for G6PD result transcription, one for haemoglobin result transcription, and one for result interpretation. For each invalid result, one point was possible
  4. *** For each valid result, five points were possible: three for G6PD result transcription, one for haemoglobin result transcription, and one for result interpretation. For each invalid result, one point was possible