. Author manuscript; available in PMC: 2019 Apr 2.

Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2018 Feb 13;57(4):263–273.e1. doi: 10.1016/j.jaac.2018.01.018

Table 3.

Socio-demographic and college-related correlates for lifetime suicidal thoughts and behaviors (STB) in the WMH-ICS surveys.

	predictor distribution^a	ideation	plan	attempt	plan among ideators	attempt among ideators without plan	attempt among ideators with plan
	% (SE)	aOR (95%CI)	aOR (95%CI)	aOR (95%CI)	aOR (95%CI)	aOR (95%CI)	aOR (95%CI)
Being female	54.4 (0.7)	1.4 (1.3–1.6)^*	1.3 (1.2–1.5)^*	2.2 (1.7–2.9)^*	1.0 (0.8–1.2)	1.2 (0.6–2.4)	2.0 (1.4–2.7)^*
Age
20 years or more	22.1 (0.6)	1.2 (1.0–1.4)^*	1.4 (1.2–1.7)^*	1.7 (1.3–2.3)^*	1.3 (1.1–1.7)^*	2.5 (1.1–5.7)^*	1.4 (1.0–2.0)
19 years	26.2 (0.6)	1.0 (0.9–1.2)	1.2 (1.0–1.4)	1.3 (1.0–1.7)	1.2 (1.0–1.5)^*	2.0 (1.0–4.1)	1.1 (0.8–1.5)
18 years^b	51.7 (0.6)	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
F(ndf,ddf)[p-value]^c		3.03(2,135706)[0.05]	6.72(2,29880)[<0.01]^*	7.52(2,46744)[<0.01]^*	3.85(2,42841)[0.02]^*	3.40(2,8749)[0.03]^*	1.59(2,28505)[0.20]
Parental education
Low	18.4 (0.5)	1.0 (0.8–1.1)	0.9 (0.7–1.1)	0.9 (0.6–1.2)	0.9 (0.7–1.1)	1.9 (0.8–4.5)	0.8 (0.5–1.2)
Medium	24.3 (0.6)	0.9 (0.8–1.0)	0.9 (0.7–1.0)	0.7 (0.5–1.0)^*	1.0 (0.8–1.2)	1.6 (0.7–3.8)	0.7 (0.5–1.0)^*
High	57.3 (0.7)	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
F(ndf,ddf)[p-value]^c		1.68(2,465)[0.19]	1.27(2,691)[0.28]	2.45(2,1030)[0.09]	0.35(2,446)[0.70]	1.26(2,903)[0.28]	2.40(2,681)[0.09]
Parents not married or at least one parent deceased	25.8 (0.6)	1.5 (1.3–1.6)^*	1.4 (1.2–1.7)^*	1.5 (1.2–2.0)^*	1.1 (0.9–1.3)	1.0 (0.5–2.0)	1.2 (0.9–1.7)
Place raised
Rural area	7.6 (0.4)	1.0 (0.8–1.2)	0.8 (0.6–1.2)	1.2 (0.7–2.0)	0.8 (0.5–1.1)	0.7 (0.1–4.0)	1.8 (0.9–3.7)
Suburbs	17.1 (0.6)	1.1 (0.9–1.4)	1.1 (0.8–1.4)	1.3 (0.8–2.0)	1.0 (0.7–1.4)	0.5 (0.1–2.1)	1.6 (0.9–2.8)
Town/village	20.5 (0.6)	1.1 (1.0–1.3)	1.0 (0.8–1.2)	1.1 (0.8–1.7)	0.9 (0.7–1.2)	1.2 (0.4–3.4)	1.1 (0.7–1.8)
Large city	26.8 (0.6)	1.0 (0.8–1.1)	0.9 (0.7–1.1)	1.4 (1.0–2.0)^*	0.9 (0.7–1.2)	2.1 (0.9–4.7)	1.8 (1.2–2.8)^*
Small city	28.0 (0.6)	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
F(ndf,ddf)[p-value]^c		1.14(4,359)[0.34]	1.02(4,482)[0.40]	1.09(4,483)[0.36]	0.50(4,264)[0.73]	1.58(4,4624)[0.18]	2.35(4,345)[0.05]
Religion
Another religion	7.3 (0.4)	1.5 (1.1–1.9)^*	1.7 (1.3–2.2)^*	2.0 (1.2–3.3)^*	1.5 (1.0–2.1)^*	1.6 (0.3–7.7)	1.3 (0.7–2.4)
No religion	30.8 (0.7)	1.5 (1.3–1.7)^*	1.8 (1.5–2.1)^*	1.3 (1.0–1.7)	1.5 (1.3–1.9)^*	1.2 (0.5–2.5)	0.8 (0.5–1.1)
Christian	61.9 (0.7)	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
F(ndf,ddf)[p-value]^c		23.63(2,1364)[<0.01]^*	28.96(2,730)[<0.01]^*	4.10(2,145)[0.02]^*	9.65(2,1035)[<0.01]^*	0.27(2,402)[0.76]	2.29(2,202)[0.10]
Sexual orientation
Non-heterosexual with same-sex sexual intercourse	5.4 (0.3)	4.2 (3.3–5.2)^*	5.6 (4.4–7.2)^*	7.9 (5.4–11.6)^*	2.9 (2.1–3.9)^*	6.1 (2.5–14.5)^*	2.5 (1.6–4.0)^*
Non-heterosexual without same-sex sexual intercourse	8.0 (0.4)	3.3 (2.7–3.9)^*	4.3 (3.5–5.3)^*	4.3 (2.9–6.5)^*	2.4 (1.8–3.1)^*	/	1.9 (1.1–3.1)^*
Heterosexual - some same-sex attraction	14.1 (0.5)	1.9 (1.6–2.2)^*	2.2 (1.9–2.7)^*	2.3 (1.7–3.2)^*	1.6 (1.3–2.0)^*	1.0 (0.3–3.2)	1.3 (0.9–1.9)
Heterosexual - no same-sex attraction	72.6 (0.6)	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
F(ndf,ddf)[p-value]c		100.66(3,220)[<0.01]^*	110.57(3,402)[<0.01]^*	39.60(3,100)[<0.01]^*	24.94(3,655)[<0.01]^*	2.10(3,16)[0.14]	5.32(3,146)[<0.01]^*
Current living situation
Other	1.6 (0.2)	1.5 (0.9–2.3)	1.1 (0.7–2.0)	1.3 (0.5–3.5)	0.8 (0.4–1.7)	2.7 (0.5–15.8)	0.6 (0.2–2.3)
Private hall of residence	3.2 (0.3)	1.0 (0.7–1.4)	1.0 (0.7–1.5)	1.6 (0.9–3.0)	1.0 (0.6–1.7)	2.1 (0.4–10.7)	2.0 (0.9–4.4)
Shared house or apartment/flat	11.1 (0.4)	1.0 (0.8–1.2)	0.9 (0.7–1.2)	1.2 (0.8–1.7)	0.9 (0.7–1.2)	0.9 (0.3–2.9)	1.5 (0.9–2.4)
University or college hall of residence	27.8 (0.7)	1.1 (0.9–1.3)	1.1 (0.9–1.4)	1.0 (0.7–1.6)	1.1 (0.8–1.4)	2.3 (0.6–8.3)	0.8 (0.5–1.4)
Parents or other relative or own home	56.3 (0.7)	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
F(ndf,ddf)[p-value]^c		0.75(4,200)[0.56]	0.40(4,160)[0.81]	0.59(4,135)[0.67]	0.21(4,332)[0.93]	0.68(4,158)[0.60]	2.04(4,323)[0.09]
Expected to work on a student job	72.4 (0.6)	0.8 (0.7–0.9)^*	0.9 (0.7–1.0)	1.0 (0.7–1.3)	1.0 (0.8–1.3)	1.0 (0.5–2.1)	1.1 (0.8–1.6)
Self-reported ranking high school
Bottom 70%	22.7 (0.6)	1.2 (1.0–1.4)^*	1.1 (0.9–1.3)	1.2 (0.8–1.7)	0.9 (0.7–1.2)	1.1 (0.4–2.6)	1.1 (0.7–1.8)
Top 30 to 10%	30.2 (0.6)	1.0 (0.9–1.1)	0.9 (0.8–1.1)	1.0 (0.7–1.4)	0.9 (0.7–1.1)	0.5 (0.2–1.5)	1.1 (0.7–1.7)
Top 10 to 5%	22.3 (0.6)	1.0 (0.9–1.2)	0.9 (0.8–1.2)	1.0 (0.7–1.4)	0.9 (0.7–1.2)	1.1 (0.4–2.9)	1.0 (0.6–1.6)
Top 5%	24.8 (0.6)	(ref)	(ref)	(ref)	(ref)	(ref)	(ref)
F(ndf,ddf)[p-value]^c		2.72(3,327)[0.04]^*	0.83(3,312)[0.48]	0.64(3,812)[0.59]	0.54(3,2489)[0.65]	0.78(3,1033)[0.51]	0.20(3,1057)[0.90]
Most important reason to go to college extrinsic	10.6 (0.5)	1.1 (0.9–1.4)	1.2 (0.9–1.5)	1.5 (1.0–2.2)^*	1.1 (0.9–1.5)	1.2 (0.4–3.9)	1.3 (0.8–2.1)

Note: all models adjusted for the predictors shown in the rows, and for country membership. We additionally tested all possible two-way interactions between predictors shown in the rows; none were significant after adjusting for false discovery rate (Q = 0.05). Significant findings are indicated in bold and marked with an asterisk; aOR = adjusted odds ratio; CI = confidence interval; SE = standard error.

α = 0.05.

to obtain pooled estimates of predictor distributions across countries, each country was given an equal sum of weights.

16 and 17 year old respondents (n = 2 [<0.01%], and n = 307 [0.8%], respectively) were classified in the 18 year old respondent group for all analyses.

F-test to evaluate joint significance of categorical predictor levels based on multiple imputations. ndf = numerator degrees of freedom; ddf = denominator degrees of freedom.