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Table 1 Baseline characteristics of study participants by groups of FEV1/FVC and in all participants (N = 4019)

From: Association of lung function with cardiovascular risk: a cohort study

Variables

 

FEV1/FVC (%)

 

All participants

L4 (≥90)

L3 (80 ~ < 90)

L2 (70 ~ < 80)

L1 (<  70)

P trend

No. subjects

4019

1606

1664

648

101

 

No. subjects in Wuhan city

2536 (63.10)

855 (53.24)

1085 (65.2)

511 (78.86)

85 (84.16)

< 0.001

Age, years

53.98 ± 11.21

52.14 ± 11.02

54.23 ± 11.02

56.69 ± 11.16

61.51 ± 10.58

< 0.001

male sex

1304 (32.45)

485 (30.20)

509 (30.59)

261 (40.28)

49 (48.51)

< 0.001

Body mass index, kg/m2

24.05 ± 3.36

24.08 ± 3.45

24.12 ± 3.31

23.93 ± 3.27

23.30 ± 3.23

0.105

Education levels

 Middle school or below

2505 (62.33)

958 (59.65)

1042 (62.62)

428 (66.05)

77 (76.24)

< 0.001

 High school

1100 (27.37)

457 (28.46)

458 (27.52)

167 (25.77)

18 (17.82)

0.035

 University or above

414 (10.30)

191 (11.89)

164 (9.86)

53 (8.18)

6 (5.94)

0.002

Physical activity

1967 (48.94)

791 (49.25)

836 (50.24)

298 (45.99)

42 (41.58)

0.120

Smokersa

886 (22.05)

307 (19.12)

351 (21.09)

192 (29.63)

36 (35.64)

< 0.001

Smoking amount, pack-yearsb

5.29 ± 14.09

4.26 ± 12.79

4.71 ± 13.12

8.38 ± 17.37

11.45 ± 20.29

< 0.001

Drinkersa

714 (17.77)

257 (16.00)

276 (16.59)

154 (23.77)

27 (26.73)

< 0.001

Abdominal obesity

1795 (44.66)

707 (44.02)

774 (46.51)

280 (43.21)

34 (33.66)

0.392

LDL, mmol/L

3.10 ± 1.02

2.98 ± 1.02

3.15 ± 1.02

3.23 ± 1.02

3.19 ± 0.89

< 0.001

10-Year CVD Risk, %

10.24 ± 9.11

9.16 ± 8.50

10.21 ± 9.10

12.25 ± 9.81

15.11 ± 10.25

< 0.001

10-Year CVD Risk

 Low (< 10%)

2452 (61.01)

1050 (65.38) ()(65.38)

1033 (62.08)

329 (50.77)

40 (39.60)

< 0.001

 High (≥10%)

1567 (38.99)

556 (34.62)

631 (37.92)

319 (49.23)

61 (60.40)

< 0.001

  1. Abbreviations: FEV1/FVC the ratio of forced expiratory volume in the 1 s to forced vital capacity, LDL low density lipoprotein
  2. Values are n (%) or mean ± SD
  3. aSmokers/drinkers included both current and former smokers/drinkers
  4. bSmoking amount was calculated among both current and former smokers
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Respiratory Research

ISSN: 1465-993X

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