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. 2021 Feb 5;36(3):295–308. doi: 10.1093/her/cyab007

Table III.

Coefficients from adjusted generalized estimating equation models for spring term self-reported substance use resource outcomes among members of Massachusetts high-school GSAs and comparison students sampled from classrooms in the same schools, N = 1900

Variables School resources
Community resources
Comfort accessing resources Confidence in finding resources Number of resources listed Comfort accessing resources Confidence in finding resources Number of resources listed
b (95% CI), P b (95% CI), P b (95% CI), P b (95% CI), P b (95% CI), P b (95% CI), P
GSA membership (ref = nonmember)
 GSA member 0.26 (0.01, 0.50), P = 0.044 0.01 (−0.19, 0.21), P = 0.924 0.30 (0.06, 0.53), P = 0.014 0.05 (−0.19, 0.28), P = 0.694 −0.12 (−0.36, 0.11), P = 0.301 0.04 (−0.09, 0.17), P = 0.588
Substance use (ref = no substance use)
 Any substance use at time 1 −0.62 (−0.99, −0.24), P = 0.001a −0.56 (−0.87, −0.25), P <0.001a −0.10 (−0.42, 0.22), P = 0.544 −0.37 (−0.69, −0.06), P = 0.021 −0.59 (−0.91, −0.28), P < 0.001a −0.04 (−0.24, 0.17), P = 0.714
 Any substance use x GSA sample 0.45 (0.15, 0.74), P = 0.003a 0.33 (0.08, 0.59), P = 0.010a 0.04 (−0.20, 0.28), P = 0.739 0.21 (−0.05, 0.46), P = 0.109 0.37 (0.12, 0.61), P = 0.003a 0.00 (−0.15, 0.16), P = 0.981
Outcome value at time 1 0.40 (0.36, 0.44), P < 0.001a 0.39 (0.36, 0.43), P < 0.001a 0.24 (0.18, 0.30), P < 0.001a 0.41 (0.37, 0.45), P < 0.001a 0.40 (0.36, 0.43), P <0.001a 0.24 (0.19, 0.30), P < 0.001a
Non-GSA club participation 0.04 (−0.00, 0.07), P = 0.081 0.04 (0.01, 0.07), P = 0.007a 0.05 (0.01, 0.09), P = 0.008a 0.06 (0.02, 0.10), P = 0.007a 0.03 (−0.01, 0.08), P = 0.152 0.03 (0.01, 0.05), P = 0.011a
Sexual orientation identity (ref = heterosexual)
 Sexual minority identity −0.22 (−0.41, −0.02), P = 0.031 −0.17 (−0.33, −0.01), P = 0.042 −0.01 (−0.13, 0.12), P = 0.934 −0.09 (−0.28, 0.11), P = 0.380 −0.13 (−0.30, 0.04), P = 0.138 0.01 (−0.09, 0.10), P = 0.875
FRPL status (ref = no FRPL)
 Receives free or reduced-price lunch −0.01 (−0.17, 0.16), P = 0.947 −0.09 (−0.23, 0.06), P = 0.231 −0.05 (−0.18, 0.07), P = 0.416 −0.19 (−0.34, −0.04), P = 0.013 −0.10 (−0.26, 0.06), P = 0.207 −0.13 (−0.19, −0.07), P<0.001a
 Not sure −0.06 (−0.24, 0.11), P = 0.484 −0.27 (−0.48, −0.06), P = 0.011 −0.09 (−0.27, 0.09), P = 0.306 −0.08 (−0.27, 0.10), P = 0.375 −0.15 (−0.33, 0.03), P = 0.098 −0.09 (−0.20, 0.02), P = 0.116
Gender group (ref = cis female)
 Cis male 0.14 (0.02, 0.25), P = 0.021 0.07 (−0.02, 0.17), P = 0.119 −0.04 (−0.14, 0.06), P = 0.467 0.07 (−0.03, 0.17), P = 0.189 0.05 (−0.07, 0.17), P = 0.390 0.04 (−0.01, 0.09), P = 0.137
 Gender minority −0.25 (−0.50, 0.01), P = 0.060 −0.02 (−0.27, 0.22), P = 0.863 −0.16 (−0.36, 0.05), P = 0.132 −0.36 (−0.54, −0.17), P<0.001a −0.12 (−0.37, 0.13), P = 0.349 −0.12 (−0.26, 0.03), P = 0.119
Nativity (ref = born in the United States)
 Born outside the United States 0.14 (−0.02, 0.30), P = 0.093 0.12 (−0.07, 0.31), P = 0.211 0.01 (−0.14, 0.15), P = 0.941 0.17 (−0.02, 0.37), P = 0.084 0.00 (−0.18, 0.19), P = 0.964 0.04 (−0.10, 0.18), P = 0.585
Race/ethnicity (ref = students of color)
 White 0.08 (−0.05, 0.21), P = 0.231 0.15 (0.01, 0.28), P = 0.031 0.07 (−0.06, 0.20), P = 0.270 0.12 (−0.02, 0.26), P = 0.098 0.19 (0.03, 0.36), P = 0.023 0.05 (−0.05, 0.15), P = 0.310
Age (in years) −0.02 (−0.06, 0.02), P = 0.236 −0.03 (−0.08, 0.03), P = 0.341 −0.05 (−0.10, −0.00), P = 0.039 −0.04 (−0.09, 0.01), P = 0.167 −0.02 (−0.07, 0.02), P = 0.304 −0.02 (−0.04, 0.01), P = 0.220

Note. FRPL, free or reduced-price lunch. Results are based on generalized estimating equation models.

a

Statistical significance after applying the Holm method for multiple comparisons, with tests of each predictor across all six outcomes treated as a family of tests.