Effect of the intervention on primary and secondary outcomes, mean (SD), comparing Writing Aid and MS Word tools in a crossover design (n=54)
| Outcomes (factor score) | MS Word Mean (SD) | Writing Aid Mean (SD) | Mean difference and 95% CI* | P value of mean difference | Effect-size 95% CI* |
| Intention of use | 5.51 (1.24) | 5.84 (1.24) | 0.25 (-0.05 to 0.55) | p=0.10 | 0.23 (-0.05 to 0.5) |
| Perceived usefulness | 5.38 (1.14) | 5.63 (1.06) | 0.19 (-0.04 to 0.41) | p=0.10 | 0.23 (-0.04 to 0.5) |
| Perceived ease of use | 5.25 (1.30) | 5.98 (0.93) | 0.59 (0.29 to 0.89) | p<0.001 | 0.54 (0.25 to 0.83) |
*Cohen’s d values used to estimate the effect size for the difference between the interventions (ie, Writing Aid minus MS Word documentation scores) in terms of SD scores; Cohen’s d values (x≤0.2, 0.2<x<0.8 and x≥0.8), represents small, medium and large effects.