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Table 1 Characteristics of participants in Three Gorges Reservoir Region, China

From: Prevalence of diabetes and impaired fasting glucose among residents in the Three Gorges Reservoir Region, China

Variables Male (n = 1777) Female (n = 1944) Total X2/t P value
Age (%)      
18-29 319 (18.0) 328 (16.9) 647 (17.4) 3.413 0.637
30-39 328 (18.5) 334 (17.2) 662 (17.8)
40-49 373 (21.0) 437 (22.5) 810 (21.8)
50-59 323 (18.2) 376 (19.3) 699 (18.8)
60-69 252 (14.2) 264 (13.6) 516 (13.9)
>70 182 (10.2) 205 (10.5) 387 (10.4)
Marital status (%)      
Unmarried 180 (10.1) 125 (6.4) 305 (8.2) 28.143 <0.001
Married 1490 (83.8) 1639 (84.3) 3129 (84.1)
Widowed or divorces 107 (6.0) 180 (9.3) 287 (7.7)
Education level (%)      
Lower than primary school 745 (41.9) 1083 (55.7) 1828 (49.1) 75.836 <0.001
Junior middle school 575 (32.4) 519 (26.7) 1094 (29.4)
Senior middle school 320 (18.0) 252 (13.0) 572 (15.4)
College and above 137 (7.7) 90 (4.6) 227 (6.1)
Occupation (%)    
Peasant 936 (52.7) 1090 (56.1) 2026 (54.4) 68.183 <0.001
Laborer 396 (22.3) 252 (13.0) 648 (17.4)
Retiree or House worker 300 (16.9) 455 (23.4) 755 (20.3)
Others 145 (8.2) 147 (7.6) 292 (7.8)
Income (%)      
Lower than 5000 RMB/Year 249 (14.0) 333 (17.1) 582 (15.6) 501.912 <0.001
5000-9999 RMB/year 529 (29.8) 513 (26.4) 1042 (28.0)
10000-49999 RMB/year 216 (12.2) 158 (8.1) 374 (10.1)
>500000 RMB/year 275 (15.5) 278 (14.3) 553 (14.9)
Refuse to answer 508 (28.6) 662 (34.1) 1170 (31.4)
BMI (means ± SD, kg/m2) 23.0 ± 3.0 23.3 ± 3.3 23.1 ± 3.2 -1.976 0.048
Waist circumference (means ± SD, cm) 78.9 ± 9.2 76.5 ± 9.2 77.6 ± 9.3 8.083 <0.001
Smoking (%) 664 (37.4) 142 (7.3) 806 (20.2) 4.940 <0.001
Drinking (%) 498 (28.0) 199(10.2) 697 (18.7) 1.930 <0.001
Vegetable intake (%)      
Less than 1 time per day 128 (7.2) 132 (6.8) 260 (7.0) 3.695 0.158
1 or 2 times per day 252(14.2) 237 (12.2) 489 (13.1)
3 times per day 1397 (78.6) 1575 (81.0) 2972 (79.9)
Sedentary lifestyle time per day (%)      
Less than 3 hours 1066 (60.0) 1240 (63.8) 2306 (61.9) 8.042 0.018
3-6 hours 505 (28.4) 525 (27.0) 1030 (27.7)
More than 6 hours 206 (11.6) 181 (9.3) 387 (10.4)
Family history of hypertension (%) 294 (16.5) 374 (19.2) 668 (18.0) 3.793 0.150
Family history of diabetes (%) 275 (15.5) 284 (14.6) 559 (15.0) 1.558 0.459
Fasting glucose (mean ± SD, mmol/L) 5.5 ± 2.5 5.5 ± 1.7 5.1 ± 2.1 442.4 0.019
Overweight (%) 466 (26.2) 527 (27.1) 988 (26.6) 0.372 0.542
Obesity (%) 101 (5.7) 127 (6.5) 215 (5.8) 1.164 0.281
Central obesity (%) 448 (25.2) 690 (35.5) 1138 (30.6) 46.238 <0.001
Hypertension (%) 524 (29.5) 572 (29.4) 1096 (29.5) 0.002 0.966
  1. Abbreviation: BMI body mass index, SD standard deviation.