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. 2013 May 9;8(5):e62962. doi: 10.1371/journal.pone.0062962

Table 4. Unadjusted & Adjusted Risk of Kidney Failure in Chinese Men and Women by Smoking Status.

Men Women
Smoking Status Unadjusted Hazard Ratio (95% CI) *Multivariable Adjusted HazardRatio (95% CI) Unadjusted Hazard Ratio (95% CI) *Multivariable Adjusted Hazard Ratio (95% CI)
Never vs 1.00 1.00 1.00 1.00
Ever 1.28 (1.01–1.61) 1.29 (1.02–1.64) 1.51 (1.10–2.08) 1.18 (0.85–1.62)
Never Smoker vs 1.00 1.00 1.00 1.00
Duration of smoking <19 years 1.26 (0.83–1.91) 1.17 (0.77–1.78) 1.37 (0.65–2.90) 1.19 (0.56–2.51)
Duration of smoking 20–39 years 1.08 (0.82–1.43) 1.19 (0.90–1.58) 1.70 (1.09–2.64) 1.28 (0.82–2.00)
Duration of smoking >40 years 1.65 (1.23–2.21) 1.56 (1.13–2.14) 1.37 (0.81–2.29) 1.04 (0.62–1.76)
P trend 0.007 0.011 0.019 0.435

Never smoker was defined as those who have not ever smoked at least one cigarette a day for 1 year or longer.

Ever smoker was defined as those who have ever smoked at least one cigarette a day for 1 year or longer.

*

Model adjusted for age, body mass index, dialect (Hokkein, Cantonese), education level, history of physician diagnosed hypertension, diabetes, known heart disease or stroke, alcohol use and intake of ginseng.