Table 3.

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.