. 2022 Mar 14;9(3):e36263. doi: 10.2196/36263

Table 2.

Sample characteristics of completers of the 3-month follow-up survey and noncompleters.^a

Variables			Completers (N=1060)			Noncompleters (N=2503)			Statistics
		n (%)		Mean (SD)	n (%)		Mean (SD)	F test (df)		χ² (df)		P value
Demographic characteristics
	Biological sex: male	657 (62.0)		N/A^b	1554 (62.1)		N/A	N/A		0.01 (1)		.93
	Age (years)	1060 (100.0)		42.26 (12.93)	2503 (100.0)		38.26 (13.17)	69.35 (1,3561)		N/A		<.001
	Race: White	973 (91.8)		N/A	2249 (89.8)		N/A	N/A		3.2 (1)		.07
	Ethnicity: Latinx	51 (4.8)		N/A	135 (5.4)		N/A	N/A		0.6 (1)		.45
Employment											16.1 (2)		<.001
	Full-time	672 (63.4)		N/A	1400 (55.9)		N/A	N/A		N/A		N/A
	Unemployed	232 (21.9)		N/A	677 (27.0)		N/A	N/A		N/A		N/A
Education											1.8 (2)		.40
	General Educational Development (GED) or less	116 (10.9)		N/A	306 (12.2)		N/A	N/A		N/A		N/A
	Some college or bachelor’s degree	510 (48.1)		N/A	1180 (47.1)		N/A	N/A		N/A		N/A
Marital status											50.6 (2)		<.001
	Married/life partner	550 (51.9)		N/A	985 (39.4)		N/A	N/A		N/A		N/A
	Single	369 (34.8)		N/A	1160 (46.3)		N/A	N/A		N/A		N/A
Clinical characteristics
	Single active SUD^c	724 (68.3)		N/A	1489 (59.5)		N/A	N/A		24.6 (1)		<.001
	Discharged against staff advice	107 (10.1)		N/A	531 (21.2)		N/A	N/A		62.6 (1)		<.001
	Length of stay	1060 (100.0)		58.10 (36.16)	2503 (100.0)		48.57 (38.73)	37.60 (1,3561)		N/A		<.001
	Step down into IOP^d	559 (52.7)		N/A	1259 (50.3)		N/A	N/A		1.8 (1)		.18

^aMean (SD) reported for continuous variables and proportions (%) of samples reported for categorical variables. Pairwise differences calculated with chi-square tests and ANOVAs, as appropriate.

^bN/A: not applicable.

^cSUD: substance use disorder.

^dIOP: intensive outpatient programming.