Table 4 Summary home/work ETS exposure (lifetime hours) among never-smokers, by public ETS exposure
Cases (%) | Controls (%) | OR (95% CI) | AOR (95% CI) | χ2 trenda | |
|---|---|---|---|---|---|
Home/work ETS exposure, quartiles b | p = 0.020 | ||||
1st quartile: 0 – 6,569 hours | 22 (17%) | 41 (31%) | 1.00 (ref.) | 1.00 (ref.) | |
2nd quartile: 6,570 – 24,454 hours | 30 (23%) | 38 (28%) | 1.47 (0.73 – 2.98) | 1.33 (0.65 – 2.72) | |
3rd quartile: 24,455 – 67,707 hours | 34 (27%) | 32 (24%) | 1.98 (0.98 – 4.02) | 1.92 (0.94 – 3.94) | |
4th quartile: 67,708 + hours | 42 (33%) | 23 (17%) | 3.40 (1.65 – 7.03) | 3.04 (1.44 – 6.42) | |
Total | 128 (100%) | 134 (100%) | |||
Home/work ETS exposure, quartiles – no public ETS c | p = 0.214 | ||||
1st quartile: 0 – 6,569 hours | 15 (36%) | 22 (41%) | 1.00 (ref.) | 1.00 (ref.) | |
2nd quartile: 6,570 – 24,454 hours | 11 (26%) | 15 (28%) | 1.08 (0.39 – 2.98) | 1.05 (0.35 – 3.13) | |
3rd quartile: 24,455 – 67,707 hours | 7 (17%) | 12 (22%) | 0.86 (0.27 – 2.68) | 0.80 (0.24 – 2.68) | |
4th quartile: 67,708 + hours | 9 (21%) | 5 (9%) | 2.64 (0.74 – 9.45) | 2.32 (0.60 – 8.96) | |
Total | 42 (100%) | 54 (100%) | |||
Home/work ETS exposure, quartiles – with public ETS c | p = 0.153 | ||||
1st quartile: 0 – 6,569 hours | 7 (8%) | 19 (24%) | 1.00 (ref.) | 1.00 (ref.) | |
2nd quartile: 6,570 – 24,454 hours | 19 (22%) | 23 (29%) | 2.24 (0.78 – 6.46) | 1.91 (0.62 – 5.87) | |
3rd quartile: 24,455 – 67,707 hours | 27 (31%) | 20 (25%) | 3.66 (1.29 – 10.39) | 3.53 (1.19 – 10.47) | |
4th quartile: 67,708 + hours | 33 (38%) | 18 (23%) | 4.98 (1.76 – 14.07) | 4.05 (1.35 – 12.17) | |
Total | 86 (100%) | 80 (100%) | |||