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Table 2 Multilevel adjustment for LGB prevalence in school and unhealthy weight-control (fasting, using diet pills or purging)

From: LGB prevalence in schools is associated with unhealthy weight-control behaviors in lesbian, gay, and bisexual youth: a multilevel analysis

Parameters Empty model (Model 1) Random intercept, fixed effects contextual variable (Model 2) Random intercept, fixed effects individual variable (Model 3) Random intercept, fixed effects (individual + contextual variables) (Model 4) Random intercept, fixed effects (individual + contextual variables + Interactions) (Model 5a) Random intercept, fixed effects (individual + contextual variables + Interactions) (Model 5b) Random intercept, fixed effects (individual + contextual variables + Interactions) (Model 5c)
Fixed part
 Individual factors
  Constant 0.2***[0.2,0.3] 0.2***[0.2,0.3] 0.0***[0.0,0.1] 0.0***[0.0,0.1] 0.0***[0.0,0.1] 0.0***[0.0,0.1] 0.0***[0.0,0.1]
  Age(16–19 vs. 14–15)    1.8[1.0,3.4] 1.8[1.0,3.4] 1.8[1.0,3.3] 1.8[1.0,3.3] 1.8[1.0,3.3]
  Gender (female vs. male)    1.7**[1.2,2.4] 1.7**[1.2,2.5] 1.7*[1.2,2.5] 1.8*[1.2,2.9] 1.9*[1.1,3.1]
  Family allowance (yes vs. no)    1.2[0.8,1.7] 1.2[0.8,1.7] 1.2[0.8,1.7] 1.2[0.8,1.7] 1.2[0.8,1.7]
  LGB (yes vs. no)    1.7*[1.0,2.9] 1.9*[1.1,3.2] 1.8*[1.0,3.2] 1.9*[1.1,3.2] 1.9[0.8,4.6]
  Obese (yes vs normal/underweight)    2.1**[1.2,3.5] 2.1**[1.2,3.5] 2.1**[1.2,3.5] 2.1**[1.2,3.5] 2.1**[1.3,3.6]
  Trying to lose weight (yes vs. no)    2.4***[1.6,3.7] 2.4***[1.6,3.7] 2.4***[1.6,3.7] 2.4***[1.6,3.7] 2.5***[1.6,3.9]
  Victimization (yes vs. no)    1.6*[1.1,2.4] 1.6*[1.1,2.4] 1.6*[1.1,2.4] 1.6*[1.1,2.4] 1.6*[1.1,2.4]
  Self-perception of unhappiness (Fully unhappy/not happy vs Fully happy/very happy/happy)    1.8**[1.2,2.8] 1.8*[1.1,2.7] 1.8*[1.1,2.7] 1.8**[1.1,2.7] 1.7*[1.1,2.7]
 Cross-level interactions
  LGB prevalence in school (lower quartile) (level2)##LGB (yes vs. no) (level1)      1.2[0.3,4.8]   3.8[0.6,23.7]
  LGB prevalence in school (lower quartile) (level2) ## Gender (female) (level1)       0.8[0.4,1.8] 1.0[0.4,2.2]
  LGB prevalence in school (lower quartile) (level2)##LGB (yes vs. no) (level1))## Gender (female vs. male) (level1)        0.0[0.0,1.0]
  LGB (yes vs. no) (level1))## Gender (female vs. male) (level1)        0.9 [0.3,2.8]
 Contextual factors (School level)
  LGB prevalence in school (lower vs. middle-lower, middle-higher, and higher quartile)   1.0[0.8,1.4]   1.5*[1.0,2.2] 1.5[1.0,2.2] 1.7[1.0,3.0] 1.5[0.8,2.9]
 Random part
  Area level variance (Random intercept) 0.2[0.1,0.4] 0.2[0.1,0.4] 0.2[0.0,2.1] 7.2e-1[0,.] 5.83e-06[0,.] 6.27e-06[0,.] 3.72e-07[0,.]
  PCV&   -0% −26.0% −99.9% −99.9% −99.9% −99.9%
  Median Odds Ratio MOR = 1.3 MOR = 1.3 MOR = 1.2 MOR = 1.0 MOR = 1.0 MOR = 1.0 MOR = 1.0
  2 Res log-likelihood 2238.1 2238.1 755.8*** 751.9*** 751.8 751.6 746.1
  Observations 2385 2385 883 883 883 883 883
  1. * p < 0.05, ** p < 0.01, *** p < 0.001