Educational attainment | Regression coefficient | SE | 95% CIs | p Value |
Primary or secondary | −7.0 | 1.54 | (−10.02 to −4.07) | <0.001 |
Postsecondary (eg, carpenter and farmer) | −5.9 | 1.07 | (−7.99 to −3.86) | <0.001 |
Tertiary (non-master) (eg, nurse and policeman) | −2.7 | 0.95 | (−4.56 to −0.82) | 0.005 |
Master (eg, engineer and lawyer) | −3.9 | 1.19 | (−6.24 to −1.55) | 0.001 |