Table 1.
Demographic characteristics by number of complications
| Overall | No complication | 1 or 2 complications | 3 or more complications | |
|---|---|---|---|---|
| Total | 7081 (100.00) | 1892 (26.72) | 3613 (51.02) | 1576 (22.26) |
| Age, mean (SD)a | 59.60 (12.64) | 53.82 (12.37) | 60.12 (12.14) | 65.31 (11.12) |
| Age, N (%)a | ||||
| ≤ 45 years old | 873 (12.33) | 437 (23.10) | 376 (10.41) | 60 (3.81) |
| 46–59 years old | 2777 (39.22) | 892 (47.15) | 1418 (39.25) | 467 (29.63) |
| ≥ 60 years old | 3431 (48.45) | 563 (29.76) | 1819 (50.35) | 1049 (66.56) |
| Gender, N (%)a | ||||
| Male | 3602 (50.87) | 1075 (56.82) | 1821 (50.40) | 706 (44.80) |
| Female | 3479 (49.13) | 817 (43.18) | 1792 (49.60) | 870 (55.20) |
| Education levels, N (%)a | ||||
| Bachelor and above | 1346 (19.01) | 433 (22.89) | 689 (19.07) | 224 (14.21) |
| High school | 2252 (31.80) | 685 (36.21) | 1157 (32.02) | 410 (26.02) |
| Middle school and below | 3483 (49.19) | 774 (40.91) | 1767 (48.91) | 942 (59.77) |
| Employment status, N (%)a | ||||
| Employed | 1861 (26.28) | 788 (41.65) | 897 (24.83) | 176 (11.17) |
| Unemployed | 1077 (15.21) | 251 (13.27) | 546 (15.11) | 280 (17.77) |
| Retired | 3968 (56.04) | 794 (41.97) | 2094 (57.96) | 1080 (68.53) |
| Students | 9 (0.13) | 5 (0.26) | 3 (0.08) | 1 (0.06) |
| Others | 166 (2.34) | 54 (2.85) | 73 (2.02) | 39 (2.47) |
| Monthly income, N (%)a | ||||
| Less than RMB 2000 | 4198 (59.29) | 967 (51.11) | 2142 (59.29) | 1089 (69.10) |
| RMB 2001–5000 | 2402 (33.92) | 761 (40.22) | 1221 (33.79) | 420 (26.65) |
| RMB 5001–10,000 | 384 (5.42) | 132 (6.98) | 197 (5.45) | 55 (3.49) |
| More than 10,000 | 97 (1.37) | 32 (1.69) | 53 (1.47) | 12 (0.76) |
| Duration of type 2 diabetes, years, mean (SD)a | 7.91 (6.22) | 5.77 (5.20) | 7.86 (6.01) | 10.59 (6.76) |
| BMI level, N (%)a | ||||
| Normal/healthy (≤ 25 kg/m2) | 4321 (61.02) | 1337 (70.67) | 2157 (59.70) | 827 (52.47) |
| Overweight (25–30 kg/m2) | 2378 (33.58) | 502 (26.53) | 1254 (34.71) | 622 (39.47) |
| Obese (≥ 30 kg/m2) | 382 (5.39) | 53 (2.80) | 202 (5.59) | 127 (8.06) |
| HbA1c level, N (%)a | ||||
| Mild elevation (< 7%) | 1045 (14.76) | 274 (14.48) | 509 (14.09) | 262 (16.62) |
| Moderate elevation (7–9%) | 3008 (42.48) | 745 (39.38) | 1529 (42.32) | 734 (46.57) |
| Severe elevation (> 9%) | 3028 (42.76) | 873 (46.14) | 1575 (43.59) | 580 (36.80) |
aComparison between complication groups p < 0.0001