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Statistics Canada - Government of Canada

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Table 7
Adjusted odds ratios relating depression and selected characteristics to new case of work impairment over a two-year period, employedpopulation aged 25 to 64, Canada excluding territories, 1994/1995 to 2002/2003
  Reduced work activities due to long-term physical or mental condition At least one disability day in past two weeks due to illness or injury
Adjusted odds ratio
95% confidence interval
Adjusted odds ratio
95% confidence interval
Depression in past 12 months
1.4*
1.0 to 2.0
1.8*
1.2 to 2.6
Sex
Men
0.9
0.7 to 1.1
0.7*
0.5 to 0.8
Women1
1
1
Age group
25 to 44
0.8
0.7 to 1.0
1
0.8 to 1.3
45 to 641
1
1
Occupation
White-collar
0,8
0.7 to 1.0
1.2
0.9 to 1.5
Sales or service
0.8*
0.6 to 1.0
1
0.8 to 1.3
Blue-collar1
1
1
Weekly work hours
1 to 29
1.2
0.9 to 1.6
0.9
0.7 to 1.2
30 to 401
1
1
More than 40
1
0.8 to 1.2
0.8*
0.7 to 1.0
Work schedule
Regular day1
1
1
Regular evening or night
1.3
0.9 to 1.9
1.2
0.8 to 1.9
Irregular or rotating shift
1.1
0.9 to 1.4
1.2
1.0 to 1.4
Marital status
Married or common-law1
1
1
Divorced, separated or widowed
1.2
0.9 to 1.4
1.4*
1.1 to 1.7
Never married
1.3*
1.0 to 1.7
1.2
0.9 to 1.6
Education2
Postsecondary graduation
0.7*
0.5 to 0.9
1
0.8 to 1.4
Some postsecondary
0.7*
0.5 to 1.0
1
0.7 to 1.4
Secondary graduation or less1
1
1
Household income2
Low, lower-middle or middle
1.1
0.9 to 1.3
0.9
0.8 to 1.1
Upper-middle or high1
1
1
Chronic condition
Chronic condition
2.7*
2.3 to 3.1
1.8*
1.5 to 2.1
Body mass index category2
Underweight or normal1
1
1
Overweight
1.1
0.9 to 1.3
1.1
0.9 to 1.4
Obese
1.3*
1.0 to 1.7
1.4*
1.1 to 1.9
Other characteristics
Low emotional social support
1.2
1.0 to 1.6
0.9
0.7 to 1.1
Daily smoker
1.4*
1.2 to 1.7
1.2
1.0 to 1.5
1. Reference category; when not noted, reference category is absence of characteristic.
2. Missing category included in models to maximize sample size, but odds ratio not shown.
* Significantly different from estimate for reference category (p < 0.05).
… not applicable
Notes: Analysis of reduced work activities due to a long-term physical or mental condition was based on 18,995 records, with 994 events of reduced work activity; 1,172 records were dropped because of missing values. Analysis of at least one disabilty day in past two weeks due to illness or injury was based on 10,032 records, with 1,013 events of at least one disability day; 850 records were dropped because of missing values. Because of rounding, an odds ratio with a lower confidence interval of 1.0 was statistically significant.
Source: 1994/1995 to 2002/2003 National Population Health Survey, longitudinal Health file (square)