Association between SHS exposure (airborne nicotine and serum cotinine), asthma control (ATAQ score) and asthma severity (NAEPP category)
| Characteristic | ATAQ | NAEPP | ||
| β | P value | OR | P value | |
| Adjusted model for air nicotine (n=117) | (n=119) | |||
| Air nicotine | 0.25 (0.05–0.44) | 0.01 | 1.06 (0.85–1.32) | 0.59 |
| Age | 0.02 (−0.13 to 0.16) | 0.82 | 1.28 (1.07–1.53) | <0.01 |
| Caregiver college education | 0.92 (0.09–1.75) | 0.03 | 1.75 (0.65–4.68) | 0.27 |
| Public insurance | −0.14 (−1.34 to 1.06) | 0.82 | 1.47 (0.37–5.90) | 0.58 |
| Caregiver income | ||||
| <$20 000 | – | – | – | – |
| $20 000–$39 999 | 0.11 (−0.73 to 0.95) | 0.80 | 1.20 (0.47–3.08) | 0.71 |
| $40 000 | −0.44 (−1.75 to 0.87) | 0.51 | 0.68 (0.15–3.17) | 0.63 |
| Household occupancy | 0.01 (−0.20 to 0.23) | 0.92 | 0.95 (0.74–1.23) | 0.70 |
| Row home/town home/apartment | 0.31 (−0.82 to 1.43) | 0.59 | 3.93 (1.08–14.32) | 0.04 |
| Adjusted model for serum cotinine (n=40) | (n=40) | |||
| Serum cotinine | 0.54 (0.00–1.08) | <0.05 | 1.16 (0.56–2.40) | 0.70 |
| Age | −0.07 (−0.36 to 0.23) | 0.65 | 1.51 (0.92–2.50) | 0.11 |
| Caregiver college education | 1.07 (−0.62 to 2.76) | 0.21 | 1.82 (0.21–16.04) | 0.59 |
| Public insurance | 0.49 (−2.57 to 3.54) | 0.75 | 0.38 (0.01–14.34) | 0.60 |
| Caregiver income | ||||
| <$20 000 | – | – | – | – |
| $20 000–$39 999 | 1.12 (−0.33 to 2.57) | 0.13 | 0.78 (0.10–5.94) | 0.81 |
| $40 000 | 0.86 (−2.05 to 3.77) | 0.55 | 0.09 (0.00–4.18) | 0.22 |
| Household occupancy | 0.19 (−0.37 to 0.76) | 0.49 | 0.96 (0.48–1.92) | 0.91 |
| Row home/town home/apartment | 1.76 (−0.81 to 4.33) | 0.17 | 18.98 (0.83–435.47) | 0.07 |
Adjusted multivariable regression model used.
ATAQ, Asthma Therapy Assessment Questionnaire; NAEPP, National Asthma Education and Prevention Program; SHS, secondhand smoke.