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Table 3 Adjusted results for the association between light at night and breast cancer risk with racial stratification*

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

 

N (%)*

Crude results (n = 60,348)

Adjusted results** (n = 47,817)

LAN exposure

Cases

Referents

Odds ratios

95% CI

Odds ratios

95% CI

Whites

    

Low

8,367 (26)

4,383 (29)

Ref.

Ref.

Medium

4,912 (16)

2,320 (16)

1.11

(1.04, 1.18)

1.07

(0.97-1.17)

High

18,359 (58)

8,182 (55)

1.18

(1.12, 1.23)

1.13

(1.05 -1.22)†

Blacks

      

Low

1,240 (12)

387 (11)

Ref.

Ref.

Medium

991 (9)

292 (9)

1.06

(0.89, 1.26)

1.04

(0.78-1.38)

High

8,230 (79)

2,685 (80)

0.96

(0.85, 1.08)

1.02

(0.82-1.28)

  1. *Values reflect sample prior to geocoding match and county-level variable exclusions.
  2. **Model adjusted for: tumor grade and stage, year of diagnosis, age at cancer diagnosis.
  3. Metropolitan Statistical Area (MSA) status, births per 1,000 women aged 15–50, MSA.
  4. population mobility, population over 16 in the labor force, and prevalence of cigarette smoking.
  5. Case (breast cancer); Referent (lung cancer).
  6. † Statistically significant.
  7. Abbreviations: LAN, Light at night in watts per cm2 per sterradian; OR, odds ratio; CI, confidence interval;
  8. MSA, metropolitan statistical area.
  9. Matched data displayed; only cancer cases registering address level accuracy (AI0-AX3).
  10. were included for analysis.
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International Journal of Health Geographics

ISSN: 1476-072X