Table 1 Baseline characteristics of the 2015 medical examination population in Quzhou, China

Number

138,970

105,310

18,615

15,045

Incidence density

(person-years)

0.00480

0.00603

0.00913

Age, mean (SD)

58.82 ± 14.44

57.66 ± 15.13

62.01 ± 11.51

62.98 ± 10.99

Genders

 Male(%)

59,466 (42.79)

46,299 (43.96)

7321 (39.33)

5846 (38.86)

 Female(%)

79,504 (57.21)

59,011 (56.04)

11,294 (60.67)

9199 (61.14)

BMI(mean (SD))

23.25 ± 20.74

23.11 ± 19.58

23.61 ± 26.80

23.81 ± 20.08

Physical exercise

 No(%)

103,274 (74.31)

76,366 (72.52)

14,660 (78.75)

12,248 (81.41)

 Infrequent(%)

15,342 (11.04)

12,069 (11.46)

1983 (10.65)

1290 ( 8.57)

 Once a week(%)

7202 ( 5.18)

6138 ( 5.83)

700 ( 3.76)

364 ( 2.42)

 Everyday(%)

12,471 ( 8.97)

10,178 ( 9.66)

1209 ( 6.49)

1084 ( 7.21)

Smoking status

 Never(%)

107,790 (77.56)

81,584 (77.47)

14,559 (78.21)

11,647 (77.41)

 Quit(%)

5890 ( 4.24)

4181 ( 3.97)

905 ( 4.86)

804 ( 5.34)

 Smoking(%)

24,362 (17.53)

18,725 (17.78)

3089 (16.59)

2548 (16.94)

Drinking status

 Never(%)

108,857 (78.33)

82,556 (78.39)

14,584 (78.35)

11,717 (77.88)

 Occasional(%)

9490 ( 6.83)

7234 ( 6.87)

1244 ( 6.68)

1012 ( 6.73)

 Regular(%)

6072 ( 4.37)

4753 ( 4.51)

763 ( 4.10)

556 ( 3.70)

 Everyday(%)

12,943 ( 9.31)

9481 ( 9.00)

1850 ( 9.94)

1612 (10.71)