Table 1.

Description of included studies.

				Intervention			Control
Author and year	Location	Sample size	Setting	Age Mean (SD)/ Median [IQR]	Gender- n (%)	Ethnicity- n (%)	Age- Mean (SD)/ Median [IQR]	Gender- n (%)	Ethnicity – n (%)
Fetzner and Asmundson (2015)	Canada	33	Community	36.9(+/−11.2)	Female-25(76)	White-26(79)	Not reported	Not reported	Not reported
Goldstein et al. (2018)	USA	47	Community care	47.4(+/−15.9)	Male-17(80.9)	White-12(57.1)	46.3(+/-14.4)	Male-21(80.8)	White-13(50.0)
Gelkopf et al. (2013)	Israel	42	Rehab unit (Army)	39.1(+/−12.4)	Male-22(100)	Not reported	37.5(13.6)	Male-20(100)	Not reported
Hall et al. (2020)	USA	54	Community care	67.7(+/−3.2)	Male-34(94)	African Caribbean-33(92)	66.9 (+/-4.3)	Male-15 (83)	African-Caribbean- 13(72)
Johnson et al. (2018)	USA	38	Community care	54.3(+/−12.8)	Male-32(84.2)	Not reported	Not reported	Not reported	Not reported
Kim et al. (2013)	USA	22	Secondary care	57.6 (+/−7.7)	Female– 10 (91)	White- 6(55)	45.0 (+/-10.0)	Female-11 (100)	White- 7(64)
Mitchell et al. (2014)	USA	38	Community care (Veteran medical center)	44.4(+/−12.4)	Female-20(52.6)	White−12(60)	Not reported	Female-18(47.4)	White-8(44.4)
Powers et al. (2015)	USA	9	Community (online advertisement)	34(+/−11.8)	Female-8(89.9)	White-8(88.9)	Not reported	Not reported	Not reported
Reinhardt et al. (2018)	USA	51	Community	44.1(+/−13.9)	Male-24(47.0)	White-16(31.4)	46.6(12.7)	Male-10(19.6)	White-9(17.6)
Rosenbaum et al. (2015a,b)	Australia	81	Inpatient unit	47.1 (+/−11.3)	Female- 3 (8)	Not reported	52.0 (+/-12.7)	Female-10 (24)	Not reported
van der Kolk et al. (2014)	USA	64	Community advertisement	41.5(+/−12.2)	Female- 32(100)	White-25(78.1)	44.3(+/-11.9)	Female-32(100)	White-25(78.1)
Whitworth et al. (2019a)	USA	30	Community	27.7(+/−5.9)	Female-11(73.3)	White-4(26.7)	30.5(+/-8.7)	Female-11(73.3)	White-7(46.7)
Whitworth et al. (2019b)	USA	22	Community	33.8(+/−11.1)	Female-9(81.8)	Black or African American-4(36.4)	32.1(+/-15.6)	Female-9(81.8)	Black or African American-4(36.4)