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Table 3 Self-reported mental health problems in the past 30 days in relation to high frequency of drug use, early onset of drug use and poly drug use (controlling for age and gender)

From: Mental health problems among young people in substance abuse treatment in Sweden

 Frequency of drug use (N = 1776)Age at onset of drug use (N = 1757)Poly drug use (N = 1813)
ORP-value95% CIORP-value95% CIORP-value95% CI
Constant0.0080.001 1.2140.751 0.0020.001 
Age1.2640.001***1.206–1.3240.8570.001***0.802–0.9151.2960.001***1.235–1.359
Gender0.8790.2970.690–1.1200.9930.9670.722–1.3660.8570.2540.657–1.118
Depression1.3120.0501.000–1.7221.0470.8080.723–1.5161.2500.1380.931–1.667
Anxiety1.7190.001***1.318–2.2411.4120.0680.975–2.0451.3580.048*1.002–1.839
Concentration difficulties1.4080.003**1.124–1.7651.5550.008**1.122–2.1551.4340.007**1.106–1.860
Aggressive behaviour1.3810.020*1.052–1.8121.5760.007**1.130–2.1991.1470.3590.856–1.539
Suicidal thoughts1.1600.4630.781–1.7210.6500.1150.381–1.1110.9620.8470.650–1.424
Hallucinations0.8490.5010.526–1.3681.6010.0990.915–2.8031.6520.041*1.021–2.674
Eating disorders1.5490.0540.993–2.4191.3040.3180.774–2.1971.1460.5450.737–1.783
Self-harming behaviour0.8800.5990.546–1.4180.6010.8490.460–1.5671.1020.6920.682–1.778
Traumatic life event0.9860.9100.775–1.2551.3350.0750.971–1.8361.3020.043*1.008–1.683
Cox & Snell0.151  0.037  0.135  
Nagelkerke0.202  0.068  0.199  
  1. * = < 0.05 ** = < 0.01 *** = < 0.001