Table 2 Patient characteristics in Interviews

Gender

Male

16

76.2%

Female

5

23.8%

Age (years)

30–39

4

19.0%

40–49

3

14.3%

50–59

7

33.3%

60–69

6

28.6%

 ≥ 70

1

4.8%

Mean (SD)

53.5 (11.9)

Working status

Full-time

14

66.7%

Stay-at-home spouses (or partners)

2

9.5%

Retired

2

9.5%

Other

3

14.3%

Duration of cough symptoms

1 year or more

20

95.2%

2–4 months

1

4.8%

Duration of medical care of cough

1 year or more

20

95.2%

1–2 months

1

4.8%

Primary disease

Refractory

20

95.2%

Unexplained

1

4.8%

Hypertension other than ACE

Yes

6

28.6%

Family history of cough

Yes

1

4.8%

Smoking status

I used to smoke, but I quit

4

19.0%

I've never smoked

17

81.0%

BMI (kg/m²)

 ≤ 19

3

14.3%

20–24

11

52.4%

25–29

5

23.8%

 ≥ 30

2

9.5%

Mean (SD)

24.1(4.3)

Underlying diseases*

Asthma/Cough-variant asthma

20

95.2%

Atopic cough

2

9.5%

Postinfectious cough

1

4.8%

Undefined

1

4.8%

Other

1

4.8%

Cough VAS (past 2 weeks)

0–29

8

38.1%

30–59

9

42.9%

60–100

4

19.0%

Mean (SD)

36.2 (21.6)

Cough VAS (worst day)

0–29

5

23.8%

30–59

9

42.9%

60–100

7

33.3%

Mean (SD)

46.7 (25.4)

LCQ (mean, SD)

Physical, mean (SD)

4.8 (1.1)

Psychological, mean (SD)

4.4 (1.3)

Social, mean (SD)

4.9 (1.4)

Total, mean (SD)

14.1 (3.5)