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Table 2 Zero inflated negative binomial regression: incidence rate ratio (job strain and the use of health services)

From: Psychosocial working conditions and the utilization of health care services

  General practitioner visits Specialist visits
  model(1) model (2) model (3) model(1) model (2) model (3)
Whole population       
High job strain 1.26***
(1.19-1.31)
1.23***
(1.18-1.29)
1.10***
(1.05-1.14)
1.27***
(1.14-1.42)
1.23***
(1.11-1.37)
1.14***
(1.04-1.25)
Medium job strain 1.07***
(1.02-1.12)
1.06***
(1.02-1.11)
1.01
(0.97-1.05)
1.15***
(1.04-1.28)
1.14***
(1.03-1.26)
1.11**
(1.01-1.22)
N   29110    29105  
Males       
High job strain 1.27***
(1.18-1.38)
1.26***
(1.17-1.36)
1.11***
(1.04-1.19)
1.28***
(1.07-1.54)
1.26***
(1.06-1.50)
1.16*
(1.00-1.34)
Medium job strain 1.03
(0.96-1.10)
1.02
(0.95-1.09)
0.96
(0.90-1.02)
1.04
(0.88-1.23)
1.04
(0.88-1.22)
1.00
(0.86-1.17)
N   14328    14324  
Females       
High job strain 1.24***
(1.17-1.31)
1.23***
(1.16-1.31)
1.10***
(1.05-1.16)
1.27***
(1.13-1.44)
1.23***
(1.08-1.39)
1.13**
(1.01-1.26)
Medium job strain 1.11***
(1.04-1.18)
1.10***
(1.04-1.17)
1.06**
(1.00-1.12)
1.24***
(1.10-1.39)
1.22***
(1.09-1.37)
1.19***
(1.06-1.33)
N   14782    14781  
  1. This table reports estimated coefficients (β i ) of the zero-inflated negative binomial regression transformed to incidence-rate ratios , *** p < 0.01, ** p < 0.05, * p < 0.1, confidence interval at 95% are in parentheses. Model 1 is the baseline specification, while model 2 includes an additional confounding variable, workplace social support. In model 3, covariates representing: individual's health status, number of chronic conditions, having a family doctor, province and occupational fixed effects are included