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. 2021 May 26;18(11):5708. doi: 10.3390/ijerph18115708

Table 3.

Association between suicide-related behaviors and school start time, adjusting for mental health and demographic factors.

Factor Consider Suicide Attempt Suicide
Prevalence (%) n c aOR (95% CI) Prevalence (%) n c aOR (95% CI)
School start time
Late: ≥8:30 a.m. 17.0 1147 1.00 6.1 463 1.00
Early: 8:00–8:29 a.m. 17.2 3133 1.07 (0.97, 1.17) 7.9 1469 1.11 (0.98, 1.27)
Very Early: <8:00 a.m. 17.8 3702 1.06 (0.95, 1.18) 8.0 1742 1.10 (0.95, 1.27)
Feel sad or hopeless
Never felt sad/hopeless more than 2 weeks 3.9 1109 1.00 1.5 441 1.00
Ever felt sad/hopeless more than 2 weeks 43.3 6857 16.38 (14.63, 18.33) 19.2 3200 13.77 (11.74, 16.16)
Race/Ethnicity
Non-Hispanic White 17.3 4102 1.00 6.1 1522 1.00
Non-Hispanic Black 16.1 184 1.02 (0.77, 1.35) 8.6 112 1.53 (1.10, 2.12)
Hispanic 17.0 2653 0.88 (0.80, 0.96) 9.4 1510 1.30 (1.15, 1.48)
Other/Multi-Racial a 20.6 839 1.19 (1.04, 1.37) 10.1 422 1.64 (1.39, 1.93)
Sexual orientation
Heterosexual 13.4 5052 1.00 5.4 2179 1.00
LGB 42.0 2139 2.54 (2.29, 2.82) 20.7 1087 2.42 (2.13, 2.74)
Urbanicity
Urban 17.3 2270 1.00 7.6 1054 1.00
Suburban 17.7 2674 1.01 (0.92, 1.11) 7.6 1160 1.16 (1.01, 1.32)
Rural 17.2 3038 1.03 (0.93, 1.14) 7.7 1460 1.10 (0.98, 1.23)
Mother’s education
Less than college 20.0 2710 1.00 10.5 1430 1.00
Some college or above 17.0 4363 1.00 (0.92, 1.09) 6.0 1679 0.80 (0.71, 0.89)
Free and reduced lunch b - - 0.99 (0.98, 1.00) - - 1.03 (1.02, 1.04)

This table collects adjusted odds ratios (aORs) generated from the survey-weighted multivariate logistic regression of suicidal ideation and suicide attempts on selected student- and school-level factors. Each aOR is presented adjusting for all other factors in the model, with those reaching statistical significance at α = 0.05 bolded. a Other/multi-racial includes Asian, American Indian/Alaska Native, Native Hawaiian or other Pacific Islanders, or multi-racial; b the odds ratio for every 5% increase in the proportion of students qualifying for free and reduced lunch programs; c the unweighted number of participants. Abbreviations: CI, confidence interval; LGB, Lesbian, Gay, Bisexual.