Table 1 Clinical features of CVA and non-CVA patients

Sex (n)

Male

61

44

3.588

0.058

Female

95

41

Age (year)

35 (28, 46)

36 (31, 42)

-0.250

0.803

BMI (kg/m²)

22.88 ± 3.08

23.15 ± 2.96

-0.668

0.505

Course of disease (week)

24 (12, 96)

48 (16, 120)

-0.936

0.349

Cough inducement (n)

cold air

30

1

16.001

 < 0.001

sport

7

0

2.498

0.114

talking

4

0

0.924

0.337

pungent odors

56

0

17.893

 < 0.001

special foods

9

0

3.616

0.057

belching

14

0

8.099

0.011

smoking

10

1

2.363

0.124

keeping pets

4

0

0.924

0.337

Cough trait (n)

dry cough

143

73

1.980

0.159

wet cough

13

12

Cough phase (n)

Yes

76

13

26.390

 < 0.001

No

80

72

Seasonal cough (n)

Yes

38

6

11.034

0.001

No

118

79

Chest tightness (n)

Yes

32

0

20.106

 < 0.001

No

124

85

Chest pain (n)

Yes

3

0

0.460

0.497

No

153

85

History of allergic rhinitis (n)

Yes

43

7

12.502

 < 0.001

No

113

78

Family history of allergies (n)

Yes

14

2

3.892

0.049

No

142

83