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Table 1 Characteristics of study participants by CVD group

From: Machine learning identifies prominent factors associated with cardiovascular disease: findings from two million adults in the Kashgar Prospective Cohort Study (KPCS)

Characteristics

No. (%) of participants

p value

Overall

(N = 1,887,710)

Participants without CVD

(N = 1,734,061)

Participants with CVD

(N = 153,649)

Sex

   

< 0.0001

 Man

923,655 (48.9%)

850,926 (49.1%)

72,729 (47.3%)

 

 Woman

964,055 (51.1%)

 883,135 (50.9%)

80,920 (52.7%)

 

Age (year)

   

< 0.0001

 18–45

1,249,754 (66.2%)

1,186,333 (68.4%)

63,421 (41.3%)

 

 45–65

476,332 (25.2%)

416,073 (24.0%)

60,259 (39.2%)

 

 ≥ 65

161,624 (8.6%)

131,655 (7.6%)

29,969 (19.5%)

 

Ethnicity

   

< 0.0001

 Han nationality

56,078 (3.0%)

51,030 (3.0%)

5,048 (3.3%)

 

 Uyghur nationality

1,811,752 (96.0%)

1,665,177 (96.0%)

146,575 (95.4%)

 

 Other

19,880 (1.0%)

17,854 (1.0%)

2026 (1.3%)

 

Residential setting

   

< 0.0001

 Urban

457,972 (24.3%)

420,141 (24.2%)

37,831 (24.6%)

 

 Rural

1,429,738 (75.7%)

1,313,920 (75.8%)

115,818 (75.4%)

 

Economic status

   

< 0.0001

 Poor householda

531,321 (28.1%)

489,253 (28.2%)

42,068 (27.4%)

 

 Non-poor household

1,356,389 (71.9%)

1,244,808 (71.8%)

111,581 (72.6%)

 

Education level

   

< 0.0001

 Years of schooling > 9

232,335 (12.3%)

216,417 (12.5%)

15,918 (10.4%)

 

 Years of schooling ≤ 9

1,655,375 (87.7%)

1,517,644 (87.5%)

137,731 (89.6%)

 

Occupation

   

< 0.0001

 Unemployed

76,738 (4.0%)

69,099 (4.0%)

7639 (5.0%)

 

 Worker

105,740 (5.6%)

82,948 (4.8%)

22,792 (14.8%)

 

 Farmer

1,447,299 (76.7%)

1,338,807 (77.2%)

108,492 (70.6%)

 

 Office clerk

75,476 (4.0%)

70,528 (4.0%)

4948 (3.2%)

 

 Other

182,457 (9.7%)

172,679 (10.0%)

9778 (6.4%)

 

Smoking status

   

< 0.0001

 Non-smokers

1,643,712 (87.1%)

1,511,676 (87.2%)

132,036 (85.9%)

 

 Current smokers

209,372 (11.1%)

191,857 (11.1%)

17,515 (11.4%)

 

 Former smokers

34,626 (1.8%)

30,528 (1.7%)

4098 (2.7%)

 

Alcohol use

   

< 0.0001

 Non-drinkers

1,777,621 (94.2%)

1,634,865 (94.3%)

142,756 (92.9%)

 

 Ever-drinkers

110,089 (5.8%)

99,196 (5.7%)

10,893 (7.1%)

 

Exercise frequency

   

< 0.0001

 7 days/week

236,257 (12.5%)

223,137 (12.9%)

13,120 (8.5%)

 

 1–6 days/week

29,873 (1.6%)

27,927 (1.6%)

1946 (1.3%)

 

 < 1 day/week

61,804 (3.3%)

57,981 (3.3%)

3823 (2.5%)

 

 No exercise

1,559,776 (82.6%)

1,425,016 (82.2%)

134,760 (87.7%)

 

Dietary pattern

   

< 0.0001

 Omnivore diet

1,703,369 (90.2%)

1,567,719 (90.4%)

135,650 (88.3%)

 

 Plant-heavy diet

122,280 (6.5%)

110,104 (6.4%)

12,176 (7.9%)

 

 Meat-heavy diet

62,061 (3.3%)

56,238 (3.2%)

5823 (3.8%)

 

Weight group

   

< 0.0001

 Normal weightb

914,473 (48.4%)

907,673 (52.3%)

65,564 (42.7%)

 

 Overweight or obesity

973,237 (51.6%)

826,388 (47.7%)

88,085 (57.3%)

 

Diabetesc

   

< 0.0001

 No

1,805,071 (95.6%)

1,665,009 (96.0%)

140,062 (91.2%)

 

 Yes

82,639 (4.4%)

69,052 (4.0%)

13,587 (8.8%)

 

Hypertensiond

   

< 0.0001

 No

1,632,674 (86.5%)

1,530,804 (88.3%)

101,870 (66.3%)

 

 Yes

255,036 (13.5%)

203,257 (11.7%)

51,779 (33.7%)

 

Hypercholesterolemiae

   

< 0.0001

 No

1,495,620 (79.2%)

1,382,778 (79.7%)

112,842 (73.4%)

 

 Yes

392,090 (20.8%)

351,283 (20.3%)

40,807 (26.6%)

 

Hypertriglyceridemiaf

   

< 0.0001

 No

1,409,118 (74.6%)

1,303,254 (75.2%)

105,864 (68.9%)

 

 Yes

478,592 (25.4%)

430,807 (24.8%)

47,785 (31.1%)

 
  1. aPoor household was defined as a net annual household income ≤ 2952 Yuan per person
  2. bNormal weight including underweight (Body mass index < 18.5)
  3. cDiabetes was defined as a fasting blood glucose of 7.0 mmol/L or higher and/or having antidiabetic therapy
  4. dHypertension was defined as mean systolic blood pressure higher than 140 mmHg, mean diastolic blood pressure higher than 90 mmHg, and/or being on antihypertensive drugs within 2 weeks
  5. eHypercholesterolemia was defined as a total cholesterol level of 240 mg/dL or higher
  6. fHypertriglyceridemia was defined as a triglyceride level of 200 mg/dL or higher