Interquartile mean of participant test scores and differences
| Occupation | Prescore % (IQR) | Postscore % (IQR) | Percentage point difference (post–pre score) | Within group p value* | Between group p value† |
| Civilian | 40.4 (33.7–48.1) | 80.8 (71.5–86.2) | 40.4 | <0.001 | 0.007 |
| Law enforcement | 38.4 (25.9–43.3) | 69.2 (59.6–78.8) | 30.8 | <0.001 | <0.001 |
| Firefighter | 50.0 (40.4–59.6) | 73.1 (61.5–84.6) | 23.1 | <0.001 | <0.001 |
*Wilcoxon signed-rank test used for preassessment and postassessment scores.
†Mann-Whitney test used for distributions of improvements between groups, referenced against two other groupings.