Table 1.

Participant demographics.

	Early dropout (n = 16)	Partial completion (n = 27)	Successful completion (n = 41)	Group differences
Sex				${\text{X}}_{(2)}^2$ = 0.921, p = 0.696F
Women	13 (81.3)	23 (85.2)	37 (90.2)
Men	3 (18.8)	4 (14.8)	4 (9.8)
Age	31.63 ± 5.25 (21–38)	28.89 ± 5.02 (18–38)	28.51 ± 6.19 (18–41)	F(2,81) = 1.809, p = 0.170A
Expecting parents#	1 (6.3)a	12 (44.4)b	14 (34.1)a, b	${\text{X}}_{(2)}^2$ = 6.867, p = 0.032C*
Pregnant women	1 (7.7)a	11 (47.8)b	14 (37.8)a, b	n = 73 women, ${\text{X}}_{(2)}^2$ = 5.995, p = 0.048F*
Becoming a parent during treatment
	0 (0.0)a, b	0 (0.0)b	6 (42.9)a	n = 27 expecting parents#, ${\text{X}}_{(2)}^2$ = 7.163, p = 0.023F*
	0 (0.0)a, b	0 (0.0)b	6 (42.9)a	n = 26 pregnant women, ${\text{X}}_{(2)}^2$ = 6.686, p = 0.026F*
Years of regular methamphetamine use	6.43 ± 6.27 (0–23)	7.62 ± 6.34 (0–24)	6.11 ± 5.92 (0–25)	n = 76, H(2) = 1.122, p = 0.571K
Prior addiction rehab	9 (56.3)	13 (48.1)	15 (36.6)	${\text{X}}_{(2)}^2$ = 2.077, p = 0.354C
Current psychiatric comorbidity
Due to substance use (2 × F10.1, 8 × F10.2, 1 × F11.2, 3 × F12.1, 35 × F12.2, 4 × F19.2)	6 (37.5)	14 (51.9)	26 (63.4)	${\text{X}}_{(2)}^2$ = 3.256, p = 0.196C
Depressive disorder (1 × F32.0, 3 × F32.1, 1 × F33, 1 × F33.4, 1 × F33.8)	2 (12.5)	4 (14.8)	1 (2.4)	${\text{X}}_{(2)}^2$ = 3.713, p = 0.151F
Personality disorder (2 × F60.30, 7 × F60.31, 3 × F60.8)	4 (25.0)	3 (11.1)	5 (12.2)	${\text{X}}_{(2)}^2$ = 1.869, p = 0.465F
Attention-deficit hyperactivity disorder (F90.0)	3 (18.8)a, b	8 (29.6)b	3 (7.3)a	${\text{X}}_{(2)}^2$ = 5.897, p = 0.059F
Any (the above plus 1 × F40.1, 2 × F43.2, 1 × F55.2, 1 × F63, 1 × F63.0, 2 × F63.8, 3 × F70.0, 1 × F70.8, 1 × F91.1, 1 × F91.3, 1 × Q86.0)	11 (68.8)	20 (74.1)	32 (78.0)	${\text{X}}_{(2)}^2$ = 0.549, p = 0.757F
Any except due to substance use	6 (37.5)	14 (51.9)	14 (34.1)	${\text{X}}_{(2)}^2$ = 2.191, p = 0.334C

Mental illness was diagnosed according to the International Classification of Diseases, 10th revision. Any psychiatric comorbidity comprised social phobias, adjustment disorders, abuse of laxatives, habit and impulse disorders, mild intellectual disability, conduct disorders, and fetal alcohol syndrome. Statistics are based on complete data from the entire sample (N = 84) unless stated otherwise. Data are number of patients (percentage within outcome category) or group mean ± SD (min-max). Percentages with the same subscript do not significantly differ from each other (Bonferroni adjusted).

A, one-way independent ANOVA; C, Pearson's chi-square test; F, Fisher's exact-test; K, Kruskal-Wallis test.

^#Twenty-six pregnant women + one expecting father.

^*Statistically significant.