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Table 5 A subgroup analysis of the association between asthma duration and 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

Model 1

β, (95% CI)

Model 2

β, (95% CI)

Model 3

β, (95% CI)

Gender

 Male

0.002 (0.001, 0.004)

0.026 (0.024, 0.028)

0.022 (0.020, 0.024)

 Female

0.004 (0.003, 0.005)

0.018 (0.016, 0.019)

0.014 (0.012, 0.015)

Stratified by age (years)

 20–39

0.002 (− 0.003, 0.007)

0.037 (0.030, 0.045)

0.021 (0.013, 0.029)

 40–59

− 0.004 (− 0.006, − 0.002)

0.012 (0.008, 0.017)

− 0.001 (− 0.006, 0.003)

 60–80

0.002 (0.001, 0.003)

0.014 (0.011, 0.017)

0.016 (0.013, 0.019)

Race

 White

0.005 (0.004, 0.006)

0.023 (0.021, 0.025)

0.018 (0.016, 0.019)

 Black

0.000 (− 0.002, 0.002)

0.012 (0.010, 0.015)

0.003 (0.000, 0.006)

 Other races

0.005 (0.003, 0.006)

0.024 (0.022, 0.026)

0.020 (0.018, 0.022)

Stratified by asthma onset age (years)

  < 12

0.018 (0.010, 0.027)

0.018 (0.010, 0.026)

0.021 (0.013, 0.029)

 12–39

− 0.002 (− 0.005, 0.002)

− 0.001 (− 0.004, 0.002)

− 0.001 (− 0.004, 0.002)

  ≥ 40

0.005 (0.002, 0.009)

0.007 (0.004, 0.010)

0.009 (0.005, 0.012)