Table 2 Screening of covariates associated with childhood asthma
From: Multivitamin consumption and childhood asthma: a cross-sectional study of the NHANES database
Variables | OR (95% CI) | P |
|---|---|---|
Age | ||
 2-6 | Ref |  |
 7-11 | 1.64 (1.18-2.29 | 0.005 |
 12-17 | 1.52 (1.05-2.20) | 0.030 |
Gender | ||
 Male | Ref |  |
 Female | 0.81 (0.62-1.06) | 0.115 |
Race | ||
 White | Ref |  |
 Black | 1.93 (1.44-2.58) | <0.001 |
 Other | 1.01 (0.77-1.33) | 0.932 |
PIR | ||
 <1 | Ref |  |
 ≥1 | 0.78 (0.58-1.03) | 0.078 |
 Unknown | 0.84 (0.47-1.50) | 0.538 |
Household smoke exposure | ||
 No | Ref |  |
 Yes | 0.72 (0.29-1.79) | 0.469 |
 Unknown | 0.64 (0.25-1.61) | 0.327 |
Family history of asthma | ||
 No | Ref |  |
 Yes | 4.40 (2.98-6.52) | <0.001 |
 Unknown | 1.40 (0.97-2.03) | 0.072 |
Physical activity | ||
 Non-ideal | Ref |  |
 Ideal | 1.00 (0.69-1.46) | 0.993 |
 Unknow | 1.14 (0.77-1.68) | 0.503 |
Sedentary time | ||
 <3 | Ref |  |
 3-6 | 1.00 (0.72-1.39) | 0.987 |
 ≥6 | 1.04 (0.70-1.55) | 0.826 |
 Unknown | 1.00 (0.61-1.62) | 0.996 |
Pregnant smoking | ||
 No | Ref |  |
 Yes | 1.40 (1.03-1.91) | 0.033 |
 Unknown | 1.10 (0.83-1.47) | 0.495 |
Breast feeding | ||
 No | Ref |  |
 Yes | 1.34 (0.76-2.36) | 0.296 |
 Unknown | 1.99 (1.16-3.42) | 0.014 |
Low birth weight | ||
 No | Ref |  |
 Yes | 1.73 (1.24-2.40) | 0.002 |
 Unknown | 1.01 (0.79-1.30) | 0.929 |
BMI Z-score | 1.28 (1.13-1.45) | <0.001 |
Energy intake | 1.01 (1.01-1.01) | 0.008 |