Table 5.

Negative binomial regression models of PCL-C scores in the paratroopers (PARAs) and RMCs compared with other INF and comparing the PARAs and RMCs

PCL-C	Cases, n (%)	Unadjusted IRR	Adjusted IRR	N
INF	36 (6)
PARAs	12 (6)	0.75 (0.58–0.96)	0.91 (0.70–1.18)a	622
RMCs	7 (3)	0.54 (0.43–0.67)	0.64 (0.52–0.79)b	800
PARAs	12 (6)
RMCs	7 (3)	0.72 (0.52–1.00)	0.69 (0.49–0.98)c	456

Number of cases (n), percentages (%), IRR, and 95% CIs are displayed together with numbers for the final models (N).

^aAdjusted for rank, childhood adversity, theatre of deployment, coming under small arms fire, thought might be killed, unit cohesion and time between leaving theatre and completing the questionnaire.

^bAdjusted for rank, childhood adversity, theatre of deployment, coming under small arms fire, saw personnel wounded or killed and unit cohesion.

^cAdjusted for childhood adversity, time deployed for in past 3 years, theatre of deployment, time spent in a forward area, saw personnel wounded or killed and unit cohesion.