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Table 3 Association between physical exercise and non-suicidal self-harm (NSSH) and suicide attempt 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

 Non-suicidal self-harm (NSSH)Suicide attempt
 Unadjusted modelAdjusted modela Unadjusted modelAdjusted modela
n%OR95% CI-95%CI+OR95%CI-95%CI+n%OR95%CI-95%CI+OR95%CI-95%CI+
Women
Physical exercise frequency
Never44734.5%1.911.682.171.781.542.05302.3%2.532.053.131.991.572.51
Less than once a week120029.6%1.531.401.661.391.271.53651.6%1.581.331.861.241.031.49
Once a week141725.0%1.211.111.311.171.071.27510.9%1.080.911.270.960.811.15
2–3 times per week339621.7%1.010.941.080.950.891.021420.9%0.970.851.110.890.771.03
Almost every day165121.6%1.001.00670.9%1.001.00
Physical exercise intensity
I take it easy without breaking into a sweat or losing my breath175728.2%1.211.091.341.271.131.41831.3%1.130.941.371.060.861.30
I push myself so hard that I lose my breath and break into a sweat519321.8%0.860.780.940.870.790.962010.8%0.670.570.800.690.580.83
I push myself to near-exhaustion68824.5%1.001.00411.5%1.001.00
Physical exercise duration
Less than 15 min15028.8%1.381.131.681.351.081.68101.9%1.491.052.111.200.801.81
15–29 min97229.5%1.431.311.561.481.341.63411.2%1.341.131.581.281.071.54
30 min to 1 h418122.3%0.980.921.041.000.941.061670.9%0.850.750.950.850.750.97
More than 1 h233822.7%1.001.001071.0%1.001.00
Men
Physical exercise frequency
Never13415.2%1.921.552.381.661.312.09182.0%2.011.362.951.851.232.80
Less than once a week30614.5%1.821.542.141.661.391.97301.4%2.131.592.862.051.502.81
Once a week23410.8%1.291.091.541.221.011.47211.0%1.491.092.051.360.961.92
2–3 times per week5849.6%1.140.991.311.100.951.28560.9%1.240.961.611.200.901.59
Almost every day3478.5%1.001.00200.5%1.001.00
Physical exercise intensity
I take it easy without breaking into a sweat or losing my breath31315.0%1.671.402.011.621.331.96301.4%1.661.232.251.631.172.26
I push myself so hard that I lose my breath and break into a sweat9209.3%0.980.841.141.000.851.17720.7%0.780.601.010.800.601.07
I push myself to near-exhaustion2329.6%1.001.00251.0%1.001.00
Physical exercise duration
Less than 15 min5218.2%2.281.673.122.111.502.9793.1%2.331.373.941.610.863.03
15–29 min17714.1%1.681.412.011.801.492.18110.9%1.721.262.362.031.462.83
30 min to 1 h61910.5%1.211.071.361.191.051.35540.9%1.230.991.521.321.051.66
More than 1 h6158.9%1.001.00530.8%1.001.00
  1. a Adjusted for sociodemographics, body-mass index, alcohol use and problems and sleep duration