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Table 4 Blinder–Oaxaca decomposition of differences in hourly wage rates between males and females a

From: Differences in wage rates for males and females in the health sector: a consideration of unpaid overtime to decompose the gender wage gap

Overall Coeff. Robust SE 95% CI Coeff. Robust SE 95% CI
group_1 (males) 25.948 0.192 25.574 26.328     
group_2 (females) 21.274 0.093 21.092 21.456     
difference 1.220 0.010 1.199 1.240     
explained 1.046 0.006 1.034 1.058     
unexplained 1.166 0.008 1.150 1.183     
                Explained              Unexplained
Separated/div/wid 1.001 0.001 1.000 1.003 0.995 0.002 0.991 1.000
Never married 1.000 0.000 0.999 1.001 0.992 0.003 0.987 0.998
Year 11/lower 1.002 0.002 0.998 1.007 0.995 0.004 0.987 1.003
Year 12 1.002 0.001 1.000 1.004 0.998 0.002 0.993 1.002
Tertiary 0.999 0.001 0.996 1.002 0.997 0.004 0.988 1.005
Postgraduate 1.003 0.001 1.001 1.005 1.026 0.005 1.016 1.036
Manager 1.002 0.001 1.001 1.003 0.996 0.003 0.991 1.001
Clerical/service 1.018 0.002 1.015 1.021 0.993 0.004 0.986 1.000
Trade/labour 0.962 0.002 0.957 0.967 1.005 0.002 1.002 1.008
Number of children 1.018 0.002 1.014 1.021 1.001 0.004 0.994 1.008
Local 1.024 0.002 1.020 1.028 0.980 0.003 0.973 0.986
Private 1.000 0.000 1.000 1.001 1.003 0.001 1.000 1.005
Number supervised 1.002 0.001 1.001 1.003 1.001 0.003 0.995 1.007
PE 1.005 0.001 1.002 1.008 1.355 0.079 1.208 1.520
PE2 0.997 0.001 0.994 1.000 0.862 0.029 0.807 0.921
Unpaid overtime 1.011 0.002 1.008 1.014 1.004 0.005 0.995 1.014
_cons      1.014 0.029 0.958 1.072
  1. aResults retransformed to the original scale. For ease of interpretation, gender codes are reversed: male = 0; female = 1. CI, confidence interval; Coeff. coefficient; PE, experience proxy; SE, standard error; Separated/div/wid, separated/divorced/widowed.
  2. Source: Work Outcomes Research Cost-benefit Survey 2005/06.