Reference population | Assessment | Exposure time | Exposure source | Values |
SHSe status (yes/no) | ||||
Coultas et al, 198926: 149 participants aged 21–79 years asked 4–6 months apart asked if the source had smoked daily for ≥6 months | SHSe status | Pregnancy | Mother | κ=0.73*** |
Childhood | Mother | κ=0.87*** | ||
Father | κ=0.85*** | |||
Brownson et al, 199325: 37 cases and 73 controls asked 1.7–1.9 years apart. All non-smoking women participants of a larger lung cancer study in Missouri. | SHSe status | Childhood | Parents | 93.6%†, κ=0.82; SE=0.095 |
All household members | 82.7%, κ=0.60; SE=0.090 | |||
Adulthood | Spouse | 83.6%, κ=0.67; SE=0.095 | ||
All household members | 80.0%, κ=0.59; SE=0.093 | |||
Living with a smoker (yes/no) | ||||
Pron et al, 198827: 117 controls (63 females and 54 males) in a case-control study of lung cancer in Toronto asked 6 months apart | Ever living in a house with a regular smoker | Lifetime | Any |
|
Living with a regular smoker | Adulthood | Wife | N=53; κ=0.89; SE=0.064 | |
Husband | N=61; κ=0.89; SE=0.059 | |||
Children | κ=0.24; SE=0.106 | |||
Mother | κ=0.76; SE=0.103 | |||
Father | κ=0.44; SE=0.077 | |||
Sibling | κ=0.57; SE=0.117 | |||
Other (relatives) | κ=0.16; SE=0.137 | |||
Other (non-relatives) | κ=0.02; SE=0.093 | |||
Duration of exposure | ||||
Pron et al, 198827: 117 controls (62 females and 53 males) in a case-control study of lung cancer in Toronto asked 6 months apart |
| Lifetime | Any |
|
Spouse | N=58; r=0.25; 95% CI −0.01 to 0.48 | |||
Wife | N=22; r=0.37; 95% CI −0.06 to 0.68 | |||
Husband | N=36; r=0.20; 95% CI −0.14 to 0.50 | |||
Parent | N=40; r=0.48 95% CI 0.20 to 0.69 | |||
Mother | N=8; r=0.69; 95% CI −0.03 to 0.94 | |||
Father | N=32; r=0.46 95% CI 0.13 to 0.70 | |||
Other (relatives) | N=17; r=0.59; 95% CI 0.15 to 0.83 | |||
Coultas et al, 198926: 149 participants aged 21–79 years asked 4–6 months apart | Years of SHSe | Childhood | Mother | N=33; r=0.76 |
Father | N=57; r=0.75 | |||
Others | N=26; r=0.63 | |||
Years of SHSe sharing the home with smoker(s) | Adulthood | Spouse | N=40; r=0.95 | |
Other household members | N=67; r=0.78 | |||
Hours per day of SHSe | Childhood | Mother | N=31; r=0.18 | |
Father | N=55; r=0.54 | |||
Others | N=20; r=0.51 | |||
Adulthood | Spouse | N=39; r=0.25 | ||
Other household members | N=58; r=0.54 | |||
Brownson et al, 199325:37 cases and 73 controls asked 1.7–1.9 years apart. All non-smoking women participants of a larger lung cancer study in Missouri. | Pack-years of SHSe | Childhood | All household members | 60.9%, r=0.71 |
Parents | 73.6%, r=0.81 | |||
Adulthood | All household members | 52.7%, r=0.77 | ||
Spouse | 60.0%, r=0.80 | |||
Intensity of exposure | ||||
Coultas et al, 198926: 149 participants aged 21–79 years asked 4–6 months apart. Amount of cigarettes per day respondents were exposed to by the source for ≥6 months. |
| Childhood | Mother | N=48; κ=0.22* |
Father | N=79; κ=0.04* | |||
Adulthood | Spouse | N=64; κ=−0.04* | ||
Pron et al, 198827: 117 controls (62 females and 53 males) in a case-control study of lung cancer in Toronto asked 6 months apart | No. of smokers living in the home |
| ||
Johansson et al, 200528: 15 smoking parents asked 2 weeks apart | No. of smokers living in the home | r=0.5 |
*p<0.05; **p<0.01; ***p<0.001.
↵† Percentage agreement.
κ, kappa; r, correlation coefficient.