Table 2 Level of smoking in spouse and deaths from selected causes among female
never smokers in California cancer prevention study (CPS I) cohort, as of 1959
and 1972. For reference, 1960-98 death rate in deaths per 1000 person years
adjusted to 1960 US population for attained ages 35-84 is
given18
|
|
All 1959 participants, followed 1960-98
|
1959 participants aged  50, followed 1960-98
|
Participants defined in 1972, followed 1973-98
|
Smoking in spouse and cause of death
|
No of deaths/No of participants
|
Age adjusted relative risk (95% CI)
|
Fully adjusted relative risk (95% CI)
|
No of deaths/No of participants
|
Age adjusted relative risk (95% CI)
|
No of deaths/No of participants
|
Age adjusted relative risk (95% CI)
|
Coronary heart disease (death rate 1.65/1000)
|
|
|
|
|
|
|
Never (1)*
|
1053/7399
|
1.00
|
1.00
|
891/4230
|
1.00
|
428/3090
|
1.00
|
Former (2)*
|
1059/6858
|
1.02 (0.93 to 1.11)
|
1.03 (0.94 to 1.13)
|
909/4424
|
0.98 (0.89 to 1.08)
|
772/5079
|
1.03 (0.92 to 1.16)
|
Current:
|
|
|
|
|
|
|
|
Pipe or cigar
(3)*
|
389/2691
|
0.99 (0.88 to 1.11)
|
0.97 (0.86 to 1.10)
|
162/1735
|
0.97 (0.86 to 1.10)
|
24/173
|
0.99 (0.66 to 1.49)
|
1-9 cigarettes/day
(4)*
|
183/1102
|
1.13 (0.97 to 1.33)
|
1.03 (0.86 to 1.23)
|
162/719
|
1.15 (0.97 to 1.36)
|
24/200
|
0.89 (0.59 to 1.34)
|
10-19 cigarettes/day
(5)*
|
310/2117
|
1.03 (0.91 to 1.17)
|
0.99 (0.86 to 1.14)
|
272/1301
|
1.03 (0.90 to 1.18)
|
42/344
|
0.90 (0.66 to 1.24)
|
20 cigarettes/day
(6)*
|
412/3288
|
1.04 (0.92 to 1.16)
|
1.02 (0.90 to 1.16)
|
309/1735
|
0.96 (0.84 to 1.10)
|
89/616
|
1.30 (1.04 to 1.64)
|
21-39 cigarettes/day
(7)*
|
167/1646
|
0.95 (0.80 to 1.12)
|
0.88 (0.74 to 1.06)
|
127/792
|
0.95 (0.79 to 1.15)
|
25/239
|
1.14 (0.76 to 1.71)
|
40 cigarettes/day
(8)*
|
72/841
|
0.83 (0.65 to 1.06)
|
0.80 (0.62 to 1.03)
|
49/399
|
0.74 (0.55 to 0.98)
|
20/211
|
0.89 (0.57 to 1.40)
|
Total of current smokers
|
1533/11685
|
1.01 (0.93 to 1.09)
|
0.97 (0.89 to 1.06)
|
1258/6681
|
0.98 (0.90 to 1.07)
|
224/1783
|
1.06 (0.90 to 1.25)
|
Ever
|
2592/18543
|
1.01 (0.94 to 1.08)
|
0.99 (0.92 to 1.08)
|
2167/11105
|
0.98 (0.91 to 1.06)
|
996/6862
|
1.04 (0.93 to 1.16)
|
8 level index
|
3645/25942
|
1.00 (0.98 to 1.01)
|
0.99 (0.97 to 1.00)
|
3058/15335
|
0.99 (0.97 to 1.01)
|
1424/9952
|
1.02 (0.98 to 1.05)
|
Lung cancer (death rate 0.08/1000)
|
|
|
|
|
|
|
Never
|
51
|
1.00
|
1.00
|
31
|
1.00
|
25
|
1.00
|
Former
|
51
|
1.08 (0.73 to 1.60)
|
1.04 (0.69 to 1.57)
|
33
|
1.02 (0.62 to 1.66)
|
39
|
0.92 (0.56 to 1.53)
|
Current
|
75
|
0.93 (0.65 to 1.33)
|
0.88 (0.60 to 1.28)
|
44
|
0.86 (0.54 to 1.36)
|
14
|
1.00 (0.52 to 1.92)
|
Ever
|
126
|
0.99 (0.72 to 1.37)
|
0.94 (0.66 to 1.33)
|
77
|
0.93 (0.61 to 1.41)
|
53
|
0.95 (0.59 to 1.53)
|
8 level index
|
177
|
0.97 (0.91 to 1.04)
|
0.97 (0.90 to 1.05)
|
108
|
0.98 (0.89 to 1.07)
|
78
|
0.99 (0.87 to 1.13)
|
Chronic obstructive pulmonary disease (death rate 0.08/1000)
|
|
|
|
|
|
Never
|
45
|
1.00
|
1.00
|
35
|
1.00
|
21
|
1.00
|
Former
|
50
|
1.17 (0.78 to 1.75)
|
1.24 (0.80 to 1.93)
|
37
|
1.01 (0.64 to 1.60)
|
36
|
1.00 (0.59 to 1.72)
|
Current
|
78
|
1.11 (0.77 to 1.60)
|
1.12 (0.74 to 1.69)
|
54
|
0.94 (0.61 to 1.44)
|
18
|
1.57 (0.84 to 2.96)
|
Ever
|
128
|
1.13 (0.80 to 1.58)
|
1.16 (0.80 to 1.70)
|
91
|
0.97 (0.66 to 1.44)
|
54
|
1.14 (0.69 to 1.89)
|
8 level index
|
173
|
0.99 (0.92 to 1.06)
|
0.98 (0.91 to 1.06)
|
126
|
0.97 (0.89 to 1.06)
|
75
|
1.06 (0.94 to 1.20)
|
|
* Values in parentheses are index level of environmental tobacco smoke.
