Multivariate adjusted effects of socioeconomic status on intraocular pressure
| Adjusted for age and CCT | Adjusted for age, CCT and SBP | Adjusted for age, CCT and BMI | Adjusted for age, CCT, SBP and BMI | |||||
|---|---|---|---|---|---|---|---|---|
| Coefficient (95% CI) | p Value | Coefficient (95% CI) | p Value | Coefficient (95% CI) | p Value | Coefficient (95% CI) | p Value | |
| BMI, body mass index; CCT, central corneal thickness; IOP, intraocular pressure; SBP, systolic blood pressure; SGD, Singaporean dollars. | ||||||||
| p Value from test for association. | ||||||||
| Coefficient, difference in mean IOP between people in higher levels of explanatory variable (education, primary, secondary or tertiary; income = 100–200SGD or >2000SGD) and baseline level (education, no formal education; monthly income, 0–1000SGD), with all other adjusted parameters held constant. | ||||||||
| Right eye | ||||||||
| Education | ||||||||
| Intercept | 5.37 (2.06 to 9.08) | 1.32 (−2.29 to 4.92) | 4.82 (1.12 to 8.51) | 1.2 (−2.51 to 4.89) | ||||
| Primary | 0.37 (−0.26 to 1) | 0.37 (−0.25 to 0.99) | 0.42 (−0.2 to 1.04) | 0.4 (−0.22 to 1.02) | ||||
| Secondary | 0.16 (−0.69 to 1) | 0.24 (−0.55 to 1.02) | 0.23 (−0.63 to 1.08) | 0.26 (−0.54 to 1.07) | ||||
| Tertiary | −0.78 (−1.66 to 0.1) | −0.43 (−1.25 to 0.38) | −0.59 (−1.51 to 0.32) | −0.37 (−1.24 to 0.49) | ||||
| <0.01 | 0.04 | 0.02 | 0.06 | |||||
| Monthly income (SGD) | ||||||||
| Intercept | 5.89 (2.52 to 9.26) | 1.55 (−1.90 to 5) | 5.1 (1.51 to 8.69) | 1.43 (−2.14 to 5.02) | ||||
| 1000–2000 | −0.19 (−0.89 to 0.51) | −0.1 (−0.74 to 0.55) | −0.17 (−0.86 to 0.52) | −0.1 (−0.76 to 0.56) | ||||
| >2000 | −0.72 (−1.52 to 0.08) | −0.44 (−1.19 to 0.3) | −0.68 (−1.47 to 0.11) | −0.44 (−1.2 to 0.32) | ||||
| 0.12 | 0.35 | 0.13 | 0.36 | |||||
| Left eye | ||||||||
| Education | ||||||||
| Intercept | 4.55 (0.9 to 8.21) | 0.24 (−3.47 to 3.96) | 3.95 (0.19 to 7.72) | 0.23 (−3.48 to 3.95) | ||||
| Primary | 0.02 (−0.49 to 0.54) | 0.02 (−0.47 to 0.52) | 0.04 (−0.48 to 0.55) | 0.01 (−0.49 to 0.51) | ||||
| Secondary | 0.08 (−0.71 to 0.87) | 0.16 (−0.57 to 0.88) | 0.1 (−0.67 to 0.87) | 0.14 (−0.58 to 0.85) | ||||
| Tertiary | −0.84 (−1.82 to 0.15) | −0.49 (−1.43 to 0.46) | −0.75 (−1.73 to 0.24) | −0.51 (−1.46 to 0.43) | ||||
| 0.05 | 0.27 | 0.09 | 0.27 | |||||
| Monthly income (SGD) | ||||||||
| Intercept | 4.70 (1.19 to 8.21) | 0.53 (−3 to 4.06) | 4.03 (0.43 to 7.64) | 0.43 (−3.12 to 3.98) | ||||
| 1000–2000 | −0.45 (−1 to 0.12) | −0.37 (−0.88 to 0.15) | −0.44 (−0.99 to 0.11) | −0.38 (−0.9 to 0.14) | ||||
| >2000 | −0.97 (−1.65 to −0.3) | −0.71 (−1.34 to −0.08) | −0.96 (−1.60 to −0.32) | −0.72 (−1.34 to −0.09) | ||||
| 0.02 | 0.09 | 0.02 | 0.08 | |||||