Table 2 Clinical characteristics of CVA, CPA and CA

Number

2088

327

1041

720

–

Age, years

45.4 ± 14.5

43.5 ± 15.7*^#

45.8 ± 14.3

46.0 ± 14.0

0.016

Female, n (%)

1254 (60.1)

204 (62.4)^#

644 (61.9)^#

406 (56.4)

0.045

BMI kg/m²

23.3 ± 3.6

22.8 ± 3.6

23.4 ± 3.7

23.6 ± 3.5^&

0.017

Asthmatic duration, month

24.5 (7.0, 96.0)

12.0 (3.5, 36.0)*^#

24.0 (6.0, 84.0)^&#

48.0 (12.0, 120.0)^&*

< 0.001

Non-smoker, n (%)

1632 (78.2)

289 (88.4)*^#

812 (78.0)

531 (73.8)

< 0.001

Ex-smoker, n (%)

101 (4.8)

4 (1.2)*^#

56 (5.4)

41 (5.7)

< 0.001

Current smoker, n (%)

355 (17)

34 (10.4)^#

173 (16.6)^#

148 (20.6)

< 0.001

Blood Eos (10⁹/L)

0.2 (0.1, 0.5)

0.3 (0.1, 0.4)

0.3 (0.1, 0.5)

0.2 (0.1, 0.4)

0.312

With regular treatment^† within the past 3 months, n (%)

549 (26.3)

34 (10.4)*^#

274 (26.3)^&#

241 (33.5)^&*

< 0.001

Number of patients with cough, n (%)

1851 (88.6)

327 (100)

1041 (100)

483 (67.1)

NS

Dry cough, n (%)

1045/1851 (56.5)

222/327 (67.9)*

544/1041 (52.3)

279/483 (57.8)

< 0.001

Day cough, n (%)

1079/1851 (58.3)

235/327 (71.9)*^#

579/1041 (55.6)

266/483 (55

< 0.001

Night cough, n (%)

1505/1851 (81.3)

258/327 (78.9)

869/1041 (83.5)

378/483 (78.3)

0.312

Cough as the initial symptom, (n) %

1356 (64.9)

327 (100)

803 (77.1)

226 (31.4)*

< 0.001

Time from cough to wheeze ^{^}, month

–

–

3.0 (1.0,12.0)^#

2.0 (1.0, 8.0)

0.032

Lung function, n

1913

314

961

638

NS

FEV1% pred

78.8 ± 20.7

92.6 ± 12.8*^#

77.8 ± 20.8^&#

73.7 ± 20.8^&*

< 0.001

FVC% pred

92.9 ± 17.6

96.5 ± 14.9*^#

92.6 ± 18.5

91.7 ± 17.2

< 0.001

FEV1/FVC%

70.8 ± 13.2

80.7 ± 7.9*^#

70.0 ± 12.6^&#

67.0 ± 13.7^&*

< 0.001

MMEF% pred

48.5 ± 24.9

66.4 ± 21.6*^#

46.4 ± 23.8^&#

43.0 ± 24.0^&*

< 0.001