Table 3.

Differences between PL-SS and CL-SS change scores over time with SE and CI, from least squares mean estimates for outcome measures in models adjusted for independent variables of interest

Measure	Change scoresa (3 months—initial)			Change scoresa (6 months—initial)
	Difference	SE	95% CI	Difference	SE	95% CI
PCL total score	0.18	1.9	− 3.4 –3.8	− 0.24	1.9	− 4.0 to 3.5
Coping total score	1.1	2.4	− 3.5 to 4.3	− 0.07	24	− 4.8 to 4.7

The differences in change scores are the differences between Peer Led (PL) and Clinician Led (CL) mean change scores at the given time point from Initial, e.g., ΔPL, 3mo-BL—ΔCL, 3mo-BL. Negative values indicate that the PL score decreased at a faster rate than CL scores, while positive values indicate that PL scores increased at a faster rate. Covariates included age, gender, ethnicity (Hispanic vs. not Hispanic), completion of SS (did not complete, completed by 3 months, completed by 6 months), any missed interviews (any vs. none), site (POWC vs. RTC), living status (house/apartment/group home/halfway house; homeless/shelter/friend or family’s home; institution: prison/school/hospital or detox center), and time point (Initial, 3 months, and 6 months), as well as the interaction between intervention arm and time point

^aChange scores are least squares mean differences