Skip to main content

Table 1 Characteristics of participants grouped by median WWI

From: The association of asthma duration with body mass index and Weight-Adjusted-Waist index in a nationwide study of the U.S. adults

Characteristics

WWIQ1(n = 4589)

WWIQ2(n = 4581)

P-value

Gender (%)

  

 < 0.001

 Male

40.84

27.22

 

 Female

59.16

72.78

 

Age (years)

52.62 ± 16.26

60.24 ± 13.69

 < 0.001

Stratified by age (years) (%)

  

 < 0.001

 20–39

24.43

8.12

 

 40–59

37.96

32.90

 

 60–80

37.61

58.98

 

Asthma onset age (years)

23.89 ± 18.00

25.79 ± 19.48

 < 0.001

Stratified by asthma onset age (years) (%)

  

 < 0.001

  < 12

29.92

21.48

 

  ≥ 12

70.08

78.52

 

Asthma duration (years)

23.89 ± 18.00

25.79 ± 19.48

 < 0.001

Quartiles of asthma duration (years) (%)

  

 < 0.001

 Q1 (0–9)

25.02

24.10

 

 Q2 (10–19)

22.79

22.75

 

 Q3 (20–38)

28.50

25.63

 

 Q4 (39–79)

23.69

27.53

 

Race (%)

  

 < 0.001

 White

46.55

48.66

 

 Black

28.94

19.91

 

 Other races

24.52

31.43

 

Education level (%)

  

 < 0.001

  < High school

22.99

29.71

 

 High school

24.06

23.34

 

  > High school

52.91

46.82

 

 Unclear

0.04

0.13

 

PIR

2.19 ± 1.53

1.87 ± 1.35

 < 0.001

Stratified by PIR (%)

  

 < 0.001

  < 1.35

40.55

44.97

 

 1.35–3.45

36.33

39.75

 

  > 3.45

23.12

15.28

 

Smoking (%)

  

0.532

 Now

13.88

13.67

 

 Ever

25.04

25.15

 

 Never

40.01

38.94

 

 Unclear

21.07

22.24

 

Alcohol (%)

  

 < 0.001

 Yes

63.04

56.01

 

 No

29.81

37.81

 

 Unclear

7.15

6.18

 

Physical activity intensity (%)

  

0.187

 Light

26.32

27.31

 

 Moderate

22.75

23.99

 

 Vigorous

33.34

31.59

 

 Unclear

17.59

17.11

 

Hypertension (%)

  

 < 0.001

 Yes

56.35

74.50

 

 No

43.65

25.13

 

 Unclear

0.00

0.37

 

Diabetes (%)

  

 < 0.001

 Yes

21.86

49.79

 

 Borderline

5.95

3.21

 

 No

72.11

46.82

 

 Unclear

0.09

0.17

 

Prescription medications (%)

  

0.830

 Yes

71.30

71.47

 

 No

28.68

28.49

 

 Unclear

0.02

0.04

 

Energy (kcal) (%)

  

 < 0.001

 3.11–1565.4

25.23

31.26

 

 1565.5–2043.4

26.28

30.30

 

 2043.5–7878.5

31.49

25.13

 

 Unclear

17.00

13.32

 

Sugars (gm) (%)

  

 < 0.001

 3.79–69.64

25.56

31.02

 

 69.65–113.98

26.59

29.95

 

 113.99–688.79

30.86

25.71

 

 Unclear

17.00

13.32

 

Fat (gm) (%)

  

 < 0.001

 3.88–54.26

25.74

30.84

 

 54.40–80.77

27.85

28.51

 

 80.85–279.40

29.42

27.33

 

 Unclear

17.00

13.32

 

Cholesterol (mg)

  

 < 0.001

 0–164.5

28.44

27.94

 

 165.0–310.5

24.80

31.89

 

 311.0–1692.0

29.77

26.85

 

 Unclear

17.00

13.32

 

Moisture (gm) (%)

  

 < 0.001

 418.80–2127.31

28.50

28.03

 

 2127.32–3130.05

28.05

28.33

 

 3130.06–11,897.20

26.45

30.32

 

 Unclear

17.00

13.32

 
  1. Mean ± SD for continuous variables: P-value was calculated by weighted linear regression model
  2. % for Categorical variables: P-value as calculated by weighted chi-square test