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Table 2 Association between physical exercise and self-reported depression in male and female university and college students in the SHoT study, Norway, 2018

From: Physical exercise, mental health problems, and suicide attempts in university students

  Self-reported depression
   Unadjusted model Adjusted modela
n % OR 95%CI- 95%CI+ OR 95%CI- 95%CI+
Women
Physical exercise frequency
Never 320 24.7% 2.99 2.58 3.46 2.53 2.15 2.98
Less than once a week 720 17.7% 1.97 1.77 2.20 1.70 1.50 1.91
Once a week 802 14.1% 1.50 1.35 1.67 1.42 1.27 1.59
2–3 times per week 1702 10.9% 1.12 1.02 1.22 1.09 0.99 1.20
Almost every day 754 9.9% 1.00 1.00
Physical exercise intensity 320        
I take it easy without breaking into a sweat or losing my breath 1060 17.0% 1.57 1.37 1.79 1.47 1.27 1.69
I push myself so hard that I lose my breath and break into a sweat 2585 10.8% 0.93 0.83 1.06 0.92 0.81 1.05
I push myself to near-exhaustion 324 11.5% 1.00 1.00
Physical exercise duration
Less than 15 min 113 21.5% 2.29 1.84 2.84 2.14 1.68 2.73
15–29 min 546 16.5% 1.65 1.48 1.84 1.56 1.39 1.77
30 min to 1 h 2201 11.7% 1.11 1.03 1.20 1.10 1.01 1.20
More than 1 h 1106 10.7% 1.00 1.00
Men
Physical exercise frequency
Never 164 18.5% 4.86 3.88 6.09 4.08 3.19 5.20
Less than once a week 254 12.0% 2.92 2.40 3.56 2.58 2.09 3.18
Once a week 180 8.3% 1.93 1.56 2.39 1.87 1.49 2.34
2–3 times per week 401 6.6% 1.51 1.26 1.81 1.45 1.20 1.76
Almost every day 182 4.5% 1.00 1.00
Physical exercise intensity
I take it easy without breaking into a sweat or losing my breath 240 11.5% 1.95 1.58 2.41 1.85 1.47 2.33
I push myself so hard that I lose my breath and break into a sweat 620 6.3% 1.01 0.84 1.21 1.05 0.86 1.28
I push myself to near-exhaustion 152 6.2% 1.00 1.00
Physical exercise duration
Less than 15 min 40 13.9% 2.67 1.88 3.79 2.35 1.61 3.45
15–29 min 149 11.8% 2.21 1.81 2.70 2.25 1.82 2.78
30 min to 1 h 426 7.2% 1.29 1.12 1.48 1.28 1.11 1.49
More than 1 h 397 5.7% 1.00 1.00
  1. a Adjusted for sociodemographics, body-mass index, alcohol use and problems and sleep duration