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Table 3 Sociodemographic characteristics and employment precariousness in relation to poor mental health. Unless stated otherwise, figures are from baseline in year 1999/2000, with incidence rate ratios (IRR) and 95 % confidence intervals (CI). The outcome is poor mental health, defined as ‘GHQ-caseness’ at follow-up in 2010

From: Precarious employment is a risk factor for poor mental health in young individuals in Sweden: a cohort study with multiple follow-ups

Variable (numbers missing)   N/valid % % Poor mental health in 2010 IRR 95 % CI
Age 18–23 265/23.3 26.4 1.0  
24–29 420/37.0 28.8 1.1 0.8 – 1.4
30–34 450/39.6 24.4 0.9 0.7 – 1.2
  Total 1135 26.5   
Gender Male 461/40.6 20.8 1.0  
Female 674/59.4 30.6 1.5 1.2 – 1.8
Country of birth (8) Sweden 1038/92.1 25.8 1.0  
Other 89/7.9 34.8 1.4 1.003 – 1.8
Married or cohabiting (17) Yes 686/61.4 25.2 1.0  
No 432/38.6 28.7 1.1 0.9 – 1.4
Education level (14) ≥13 y 574/51.2 26.0 1.0  
≤ 12 y 547/48.8 27.1 1.0 0.8 – 1.3
Economic difficulties (17) No 824/73.7 22.7 1.0  
Yes 294/26.7 37.4 1.6 1.4 – 2.0
Economic difficulties in childhood (reported at baseline) (8) No 816/72.4 25.0 1.0  
Yes 311/27.6 31.2 1.2 1.01 – 1.5 1.6
Economic difficulties in 2010 (31) No 939/85.1 23.1 1.0  
Yes 165/14.9 46.7 2.0 1.6 – 2.5
Risky alcohol consumption (27) No 1014/91.5 25.4 1.0  
Yes 94/8.5 33.0 1.3 0.94 – 1.7
Low physical activity (26) No 958/86.4 26.0 1.0  
Yes 151/13.6 26.5 1.0 0.8 – 1.4
Low emotional support (8) No 829/73.6 22.8 1.0  
Yes 298/26.4 35.9 1.6 1.3 – 1.9
Low instrumental support (4) No 930/82.2 23.7 1.0  
Yes 201/17.8 39.3 1.7 1.4 – 2.0
Low social participation No 960/84.6 24.8 1.0  
Yes 175/15.4 36.0 1.5 1.2 – 1.8
Low social anchorage with neighbourhood (12) No 708/63.0 24.3 1.0  
Yes 415/7.0 30.8 1.3 1.04 – 1.5
Poor mental health 1999/2000 – 2005 No – No 610/53.7 15.9 1.0  
Yes – No 175/15.4 28.0 1.8 1.3 – 2.4
No – Yes 176/15.5 31.8 2.0 1.5 – 2.7
Yes – Yes 174/15.3 56.9 3.6 2.9 – 4.5
Precarious employment 1999/2000 – 2005 No – No 518/45.6 18.9 1.0  
Yes – No 248/21.9 29.8 1.6 1.2 – 2.1
No – Yes 139/12.2 30.9 1.6 1.2 – 2.2
Yes – Yes 230/20.3 37.4 2.0 1.6 – 2.6
Precarious employment 1999/2000 – 2005, dichotomised No 518/45.6 18.9 1.0  
Yes 617/54.4 32.9 1.8 1.4 – 2.2