Oaxaca decomposition of near visual impairment gap between economic groups in Shahroud, 2009
| Near visual impairment in better eye | Per cent (95% CI) | p Value |
|---|---|---|
| Prevalence in high economic group | 11.7 (10.3 to 13.0) | <0.001 |
| Prevalence in low economic group | 28.5 (26.0 to 31.0) | <0.001 |
| Differences | 16.8 (14.0 to 20.0) | <0.001 |
| Due to endowments (explained) | ||
| Gender | −0.1 (−0.5 to 0.3) | 0.540 |
| Age | 2.3 (1.6 to 3.0) | <0.001 |
| Education | 8.7 (7.1 to 10.4) | <0.001 |
| Insurance | 0.5 (0.06 to 0.8) | 0.022 |
| Eye care utilisation | 1.0 (0.5 to 1.5) | <0.001 |
| Total | 12.4 (10.6 to 14.1) | <0.001 |
| Due to coefficients (unexplained) | ||
| Gender | −5.1 (−7.8 to −2.4) | <0.001 |
| Age | −8.8 (−31.1 to 13.5) | 0.437 |
| Education | −5.7 (−12.1 to 0.6) | 0.075 |
| Insurance | 0.3 (−0.3 to 0.9) | 0.357 |
| Eye care utilisation | −1.4 (−2.5 to −0.3) | 0.015 |
| Constant | 25.2 (1.5 to 49.0) | 0.038 |
| Total | 4.4 (2.2 to 6.7) | <0.001 |