Table 3.

Estimated RR (point and 95% CI) on effect of area-level risk factors on lung cancer deaths by county, sex, and year, China

1973–1975 (n = 2,110)1990–1992 (n = 241)2004–2005 (n = 158)
MaleFemaleMaleFemaleMaleFemale
Area-level factor and data sourcePoint (95% CI)Point (95% CI)Point (95% CI)Point (95% CI)Point (95% CI)Point (95% CI)
1964 Census% Nonagr pop1.013a(1.012–1.013)1.012a (1.012–1.013)1.005b (1.001–1.009)1.007a (1.004–1.010)1.004c (1.000–1.007)1.006a (1.003–1.009)
1982 CensusUrban1.174c (0.982–1.402)NSd (NS)NS (NS)NS (NS)
HS edu1.012c (0.999–1.025)NS (NS)NS (NS)NS (NS)
% Ind. laborNS (NS)NS (NS)1.011b (1.001–1.021)NS (NS)
1984 Smoking SurveySmoking1.013b (1.002–1.023)1.042a (1.033–1.052)1.009c (0.998–1.021)1.040a (1.023–1.056)
1990 Census% Ind. labor1.028a (1.013–1.042)1.015b (1.004–1.026)NS (NS)NS (NS)
2004 Mortality SurveyEast1.291a (1.067–1.563)1.212c (0.972–1.512)
Pseudo R20.7280.6760.8870.9240.8810.904
  • Abbreviations: HS edu, high school population; ind. labor, industrial labor; nonagr pop, nonagriculture population.

  • aP < 0.001.

  • b0.001 < P < 0.05.

  • c0.05 < P < 0.1.

  • dNS, P > 0.1.