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Table 1 Detailed description of the patients and concentration indices for diabetes

From: Changes in health inequalities for patients with diabetes among middle-aged and elderly in China from 2011 to 2015

Variable 2011 2013 2015
N (%) N (%) N (%)
Gender
 male 7429 (48.06) 7869 (47.47) 7792 (47.26)
 female 8028 (51.94) 8707 (52.53) 8694 (52.74)
Age (mean ± SD) 59.3 ± 9.6 60.2 ± 9.8 61.6 ± 9.7
Marriage
 married 12,588 (81.44) 13,594 (82.01) 13,308 (80.72)
 single 2869 (18.56) 2982 (17.99) 3178 (19.28)
Education
 illiterate 4293 (27.77) 4497 (27.13) 4407 (26.73)
 literate 11,164 (72.23) 12,079 (72.87) 12,079 (73.27)
Log-Income (mean ± SD) 4.04 ± 0.67 4.01 ± 0.68 3.85 ± 0.68
Residence
 urban 5839 (37.78) 6266 (37.80) 6160 (37.37)
 rural 9618 (62.22) 10,310 (62.20) 10,326 (62.63)
Region
 Central and eastern 10,433 (67.50) 11,083 (66.86) 11,054 (67.05)
 West 5024 (32.50) 5493 (33.14) 5432 (32.95)
BMI (mean ± SD) 23.53 ± 3.86 23.81 ± 3.83 23.80 ± 3.75
Smoke
 smoker 6205 (40.14) 5897 (35.58) 4968 (30.13)
 non-smoker 9252 (59.86) 10,679 (64.42) 11,518 (69.87)
Drink
 drinker 4808 (31.11) 5336 (32.19) 5271 (31.97)
 non-drinker 10,649 (68.89) 11,240 (67.81) 11,215 (68.03)
Diabetes 867 (5.61) 1242 (7.49) 1482 (8.99)
CI 0.1359 0.1207 0.1021
(95% confidence interval) (0.0525–0.0597) (0.0709–0.0789) (0.0855–0.0942)