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. 2018 Jun 15;13(6):e0199251. doi: 10.1371/journal.pone.0199251

Table 7. Pretest and posttest scores of participants.

Test Total Questions Pretest (n = 6) Posttest (n = 6) p-value
Mean Standard Mean Standard Deviation
Domains
 Assessment 19 15.33 1.86 17.17 1.33 0.15
 Prescription 12 7.5 0.84 11 0.63 *<0.0001
 Fitting 10 4.5 1.05 5.5 2.74 0.482
 Production 5 3.17 1.17 4.17 0.75 0.076
 User’s Training 15 10.5 2.17 13.33 1.21 *0.016
 Process 10 8.67 0.82 9.5 0.55 *0.042
 Follow up and maintenance 4 3.67 0.52 3.5 0.84 0.741
Total scores 75 53.33 1.63 64.17 5.42 *0.004

*paired t-test significant at the <0.05 level

Each question values one-point