Table 2.

Proportion of chronic diseases and preventive care (%) by economic quintile, and economic-related inequality

	Hypertension and preventive care			Diabetes and preventive care
	Presence of Hypertension	Adequate medication	Measure blood-pressure	Presence of Diabetes	Adequate medication	Test blood-glucose
Respondents	27,728	5742	5742	27,728	1055	1055
Poorest, % (95%CI) a	18.18 (17.13–19.23)	50.99 (47.99–54.00)	89.30 (87.44–91.16)	1.69 (1.34–2.05)	59.09 (52.16–66.01)	77.52 (71.64–83.4)
Poorer, % (95%CI) a	20.06 (18.97–21.16)	56.89 (53.92–59.86)	91.05 (89.3–92.81)	2.97 (2.48–3.45)	68.77 (62.30–75.24)	82.73 (77.41–88.05)
Middle, % (95%CI) a	20.87 (19.74–22.00)	58.94 (55.96–61.92)	90.36 (88.56–92.17)	3.75 (3.20–4.29)	78.58 (72.80–84.36)	87.00 (82.08–91.91)
Richer, % (95%CI) a	21.43 (20.28–22.58)	64.50 (61.62–67.37)	94.86 (93.56–96.17)	4.40 (3.81–4.99)	80.07 (74.46–85.68)	91.36 (87.39–95.33)
Richest, % (95%CI) a	24.18 (22.96–25.41)	72.10 (69.41–74.78)	97.03 (96.1–97.95)	7.44 (6.68–8.21)	82.81 (77.32–88.3)	91.59 (87.59–95.60)
RIIb, (95% CI)	0.70*** (0.64–0.75)	0.70*** (0.65–0.75)	0.92*** (0.90–0.94)	0.21*** (0.16–0.27)	0.72*** (0.63–0.83)	0.85*** (0.78–0.93)
RIIc, (95% CI)	0.73*** (0.67–0.79)	0.81*** (0.75–0.87)	0.93*** (0.90–0.95)	0.32*** (0.25–0.41)	0.80*** (0.69–0.92)	0.87*** (0.80–0.96)
C, (95%CI)	0.056*** (0.041–0.070)	0.068*** (0.054–0.081)	0.017*** (0.013–0.022)	0.264*** (0.228–0.299)	0.065*** (0.043–0.088)	0.036*** (0.021–0.051)

Note: (1) 95% CI: 95% confidence interval, C: concentration index, RII: relative index of inequality; (2) ^a: weighted but unadjusted prevalence estimates; (3) ^b: RII values were established by Poisson regressions with robust variance and adjusted for gender and age; (4) ^c: RII values were established by Poisson regressions with robust variance and adjusted for gender, age, education level, marital status, working status, basic medical insurance, commercial medical insurance and urban/rural area; (5) ***p < 0.001