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Table 2 Unadjusted and adjusted results for the association between light at night and breast cancer risk

From: A case-referent study: light at night and breast cancer risk in Georgia

  N (%)* Crude results (n = 61,129) Adjusted results** (n = 47,817)
LAN exposure Cases Referents Odds ratios 95% CI Odds ratios 95% CI
Low 27,121 (63) 10,970 (60) Ref. Ref.
Medium 5,974 (14) 2,623 (14) 1.13 (1.07-1.19) 1.06 (0.97-1.16)
High 9,659 (23) 4,782 (26) 1.22 (1.18-1.28) 1.12 (1.04-1.20)
  1. *Values reflect sample prior to geocoding match and county-level variable exclusions.
  2. **Model adjusted for: race, tumor grade and stage, year of diagnosis, age at cancer diagnosis, Metropolitan Statistical Area (MSA) status, births per 1,000 women aged 15–50, MSA population mobility, population over 16 in the labor force, and prevalence of cigarette smoking.
  3. Case (breast cancer); Referent (lung cancer).
  4. † Statistically significant with p < 0.05.
  5. Abbreviations: LAN, Light at night in watts per cm2 per sterradian; OR, odds ratio; CI, confidence interval; MSA, metropolitan statistical area.
  6. Matched data displayed; only cancer cases registering address level accuracy (AI0-AX3) were included for analysis.