Participants by self-reported SHS | Median plasma cotinine and IQR (ng/mL) |
Overall (n=1172) | 0.05 (0.02, 0.17) |
Current smokers in the household* | |
0 (n=777) | 0.03 (0.02, 0.12) |
1 (n=181) | 0.14 (0.04, 0.42) |
≥2 (n=58) | 0.28 (0.08, 0.99) |
*Data restricted to 1016 participants with self-reported SHS exposure data.
LOQ, lower limit of quantitation; SHS, secondhand smoke.