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Table 4 Oaxaca-Blinder decomposition of differences in daily smoking between high school students and apprentices in the 2008, 2017-A and 2017-B samples: raw estimates and percentage contributions while excluding use of alcohol and cannabis. ESCAPAD survey, OFDT

From: Why do apprentices smoke much more than high school students? Understanding educational disparities in smoking with a Oaxaca-blinder decomposition analysis

 2008 sample2017-A sample2017-B sample
EstimateShareCIEstimateShareCIEstimateShareCI
Log odds(%) Log odds(%) Log odds(%) 
Total Unexplained−0.1665.262.8 to 69.4−0.1671.364.4 to 99.7−0.1882.174.8 to 99.7
Total Explained−0.0834.830.6 to 37.2−0.0628.70.3 to 35.6−0.0417.90.3 to 25.2
Age−0.012.31.3 to 2.90.00−0.1−2.1 to 0.30.000.8−1.3 to 1.7
Gender (Girl)−0.012.3−1.6 to 4.7−0.0210.93.4 to 12.7−0.028.5−1.4 to 12.6
Parental occupational status
 Low0.00−0.1−1.2 to 0.50.00−0.5−7.6 to 1.20.00−1.3−5.7 to 0.5
 Disadvantaged0.00−1.0−3.8 to 0.70.00−1.6−15.2 to 1.70.000.2−7.5 to 3.3
 Intermediate0.000.2−0.3 to 0.50.00−0.3−3.9 to 0.60.000.2−0.9 to 0.7
 Advantaged0.000.2−1.6 to 1.20.00−1.0− 15.4 to 2.50.00−0.5− 10.4 to 3.6
 High0.00−1.7−5.2 to 0.30.01−2.4−32.1 to 4.90.00−1.1−12 to 3.4
Parents living together (Yes)0.001.80.5 to 2.5−0.016.14.6 to 6.50.000.2−4.8 to 2.2
Living alone (Yes)0.000.5−0.2 to 0.90.000.9−1.9 to 1.60.000.3−2.9 to 1.6
Suicide attempt (Yes)−0.012.51.4 to 3.10.00−0.4−5 to 0.80.001.3−0.8 to 2.1
Grade repetition (Yes)−0.012.5−3.3 to 5.90.000.2−23.4 to 6.00.01−5.2−26.3 to 3.5
Father smokes (Yes)−0.014.13.1 to 4.7   −0.016.21.6 to 8.1
Mother smokes (Yes)−0.026.35.8 to 6.6   −0.028.55.3 to 9.8
Sum of money received (continuous)−0.0415.06.0 to 20.3−0.0416.9−11.1 to 23.7  74.8 to 99.7
  1. CI confidence interval