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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Int J Cancer. 2012 Sep 7;131(11):2547–2552. doi: 10.1002/ijc.27564

Table 3.

Odds ratios (and 95% confidence intervals) comparing the odds of breast cancer among women with less than 24 months of rotating shift-work to women with 24 or more months of rotating shift-work experience, within strata of NPAS2 Ala394Thr genotype.

Months of shift-work Ala/Ala Ala/Thr Thr/Thr
<24 1
ncase=126,
ncontrol=194		 1
ncase=97, ncontrol=255		 1
ncase=22, ncontrol=71
≥24 0.80 (0.56–1.13)
ncase=81, ncontrol=157		 1.31 (0.91–1.88)
ncase=76, ncontrol=155		 2.83 (1.47–5.56)
ncase=34, ncontrol=40