Skip to main content

Advertisement

Table 2 Multivariable Negative Binomial Regression of total number of injuries on depression and covariates (IRR and 95% CIs reported)

From: Elevated depressive symptoms and adolescent injury: examining associations by injury frequency, injury type, and gender

Variable Model 1 95% CI Model 2 95% CI
Higher risk of depression 1.41*** 1.26, 1.57 1.42*** 1.27, 1.58
Lower risk of depression Ref Ref Ref Ref
Grade level     
  10 1.24*** 1.11, 1.39 1.20*** 1.08, 1.35
  11 1.10* 0.99, 1.22 1.08 0.97, 1.20
  12 Ref   Ref  
Gender     
  Male 1.16*** 1.06, 1.26 1.14*** 1.04, 1.25
  Female Ref   Ref  
Weekly spending money, $     
  40 or more 1.07 0.97, 1.18 1.07 0.99, 1.20
  Unknown 1.06 0.93, 1.20 1.07 0.93, 1.21
  Below 40 Ref   Ref  
Risk taking behaviours     
  Current smoker 1.20** 1.04, 1.39 1.17** 1.01, 1.35
  Nonsmoker Ref   Ref  
  Heavy drinking 1.25*** 1.09, 1.42   
  Light drinking 1.08 0.96, 1.23   
  No drink Ref    
  Frequent marijuana use    1.34*** 1.18, 1.53
  Infrequent marijuana use    1.13** 1.01, 1.28
  No marijuana    Ref  
  Multiple partners 1.54*** 1.33, 1.78 1.46*** 1.26, 1.69
  Single partner 1.19*** 1.07, 1.32 1.18*** 1.07, 1.30
  Sexually inactive Ref   Ref  
Individual school measures     
  Academic Marks ≥70% 1.00 0.89, 1.12 1.02 0.92, 1.14
  Academic Marks <70% Ref   Ref  
  Absence from school 3 days or more 1.16** 1.01, 1.32 1.14 1.00, 1.29
  Absence from school 1 or 2 days 1.053 0.95, 1.17 1.05 0.95, 1.17
  No absence from school Ref   Ref  
  School team sports 1.22*** 1.11, 1.34 1.25*** 1.14, 1.36
  No school team sports Ref   Ref  
  1. ***p < 0.01, **p < 0.05.