Table 3

Weight change and subsequent cancer risk: subjects stratified by their age at diagnosis of cancer

Weight change between age 18 and 30 years
Cases (number)
Controls (number)
ORa (95% CI)
P
P for trend

In all subjectsb
966
966



          Loss of at least 10 pounds
53
81
0.66 (0.46–0.93)
0.03

          Loss of <10 to gain of ≤ 10 pounds
536
542
1 (referent)


          Gain of 10 to ≤ 20 pounds
227
190
1.19 (0.96–1.49)
0.12

          Gain of > 20 pounds
150
135
1.00 (0.77–1.30)
0.99
0.46
According to case subjects' age at diagnosis





     >30 to ≤ 40 yearsc
478
478



          Loss of at least 10 pounds
23
49
0.47 (0.28–0.79)
0.005

          Loss of <10 to gain of ≤ 10 poundsd
255
254
1 (referent)


          Gain of 10 to ≤ 20 pounds
112
89
1.25 (0.91–1.71)
0.17

          Gain of >20 pounds
88
86
1.03 (0.72–1.47)
0.88
0.48
     >40 yearsd
488
488



          Loss of at least 10 pounds
30
32
0.97 (0.52–1.65)
0.91

          Loss of <10 to gain of ≤ 10 poundsd
281
288
1 (referent)


          Gain of 10 to ≤ 20 pounds
115
101
1.16 (0.85–1.59)
0.36

          Gain of >20 pounds
62
67
0.95 (0.64–1.43)
0.82
0.75

Subjects were women with a deleterious mutation in BRCA1 or BRCA2 who did (case subjects) or did not (control subjects) receive a diagnosis of cancer. aAll odds ratios (ORs) were derived using univariate conditional logistic regression. bExcludes case subjects diagnosed at age ≤ 30 years. cExcludes case subjects diagnosed at age ≤ 30 and >40 years. dExcludes case subjects diagnosed at ≤ 40 years. CI, confidence interval.

Kotsopoulos et al. Breast Cancer Research 2005 7:R833   doi:10.1186/bcr1293