Effect of BMI and Its Optimal Cut-Off Value in Identifying Hypertension in Uyghur and Han Chinese: A Biethnic Study from the China National Health Survey (CNHS)
Table 1
Demographic and clinical characteristics of Uyghur and Han adults of China, 2013.
Uyghur (n=2928)
Han (n=3097)
Male (n=1028)
Female (n=1900)
Male (n=1255)
Female (n=1842)
Age, years (mean, SD)
46.3
14.33
43.25a
11.69
47.71d
13.66
47.73c
12.45
Educational attainment (n, %)
Illiterate
33
3.27
42
2.24
45
3.63c
195
10.66ac
Elementary school
215
21.31
411
21.94
135
10.89
274
14.97
Junior high school
241
23.89
469
25.04
386
31.13
502
27.43
Senior high school
241
23.89
420
22.42
289
23.31
378
20.66
College or higher
279
27.65
531
28.35
385
31.05
481
26.28
Residential areas (n, %)
Urban
519
51.18
877
46.62b
800
64.41c
1150
62.77c
Rural
495
48.82
1004
53.38
442
35.59
682
37.23
BMI, kg/m2 (n, %)
<25
454
44.42
841
44.29a
612
48.84d
1122
60.91ac
≥25
457
44.72
706
37.18
531
42.38
581
31.54
≥30
111
10.86
352
18.54
110
8.78
139
7.55
Cigarette smoking (n, %)
Ever smoking
711
70.19
3
0.16a
906
73.01
34
1.85ac
Never smoking
302
29.81
1881
99.84
335
26.99
1799
98.15
Alcohol drink (n, %)
Quit drink
252
25.07
4
0.21a
137
11.16c
36
1.97ac
Regular drink
71
7.06
1
0.05
295
24.02
33
1.81
Occasional drink
267
26.57
7
0.37
560
45.60
413
22.64
Never drink
415
41.29
1873
99.36
236
19.22
1342
73.57
Physical activity (n, %)
Low
174
17.58
620
34.75a
166
13.46c
401
22.09ac
Moderate
648
65.45
1002
56.17
825
66.91
1218
67.11
High
168
16.97
162
9.08
242
19.63
196
10.80
FPG, mmol/L (mean, SD)
5.30
1.72
5.12a
1.48
5.30
1.57
5.20
1.38
TC, mmol/L (mean, SD)
4.87
1.08
4.76b
1.02
4.69c
0.94
4.81a
1.00
TG, mmol/L (mean, SD)
2.03
2.05
1.4a
1.06
2.02
2.12
1.49ad
1.23
LDL-C, mmol/L (mean, SD)
2.98
0.79
2.89a
0.82
2.75c
0.74
2.77c
0.78
HDL-C, mmol/L (mean, SD)
1.26
0.25
1.42a
0.26
1.34c
0.28
1.52ac
0.30
SBP, mmHg (mean, SD)
123.33
15.71
117.06a
18.29
124.30
14.92
117.22a
17.06
DBP, mmHg (mean, SD)
73.89
11.16
72.12
11.80
76.84c
11.04
71.95a
10.35
Hypertension (n, %)
219
21.53
321
17.05a
344
27.79c
388
21.19ac
Values are presented as mean and SD for continuous data or number and percentage (%) for categorized data. a: comparison between male and female in the same ethnic group, P<0.01; b: comparison between male and female in the same ethnic group, P<0.05; c: comparison between Uyghur and Han in the same sex group, P<0.01; d: comparison between Uyghur and Han in the same sex group, P<0.05. Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared.); FPG: fasting plasma glucose; SBP: systolic blood pressure; DBP: diastolic blood pressure; TC, triglyceride; TC, total cholesterol, HDL-C, high density lipoprotein cholesterol; and LDL-C: low-density lipoprotein cholesterol.