Table 3. Composite lifestyle score and gastric cancer risk by gender, the Singapore Chinese Health Study, 1993–2014.
| Characteristics | N | Cases | Person-years | HR (95% CI)a |
|---|---|---|---|---|
|
Male (N=27 293) | ||||
| Composite scores (five factors) | ||||
| 0/1/2 | 4866 | 103 | 74 708 | 1.00 (reference) |
| 3 | 9929 | 159 | 158 964 | 0.72 (0.56–0.92) |
| 4 | 9543 | 117 | 157 918 | 0.53 (0.40–0.69) |
| 5 | 2955 | 33 | 49 597 | 0.46 (0.31–0.69) |
| Ptrend | <0.001 | |||
| PAR (95% CI) | 0.50 (0.34–0.63) | |||
| Composite Z-scores (five factors) | ||||
| 1st Quartile | 6823 | 127 | 105 697 | 1.00 (reference) |
| 2nd Quartile | 6824 | 101 | 109 148 | 0.76 (0.58–0.99) |
| 3rd Quartile | 6823 | 97 | 112 193 | 0.74 (0.56–0.96) |
| 4th Quartile | 6823 | 87 | 114 148 | 0.62 (0.47–0.82) |
| Ptrend | 0.001 | |||
|
Female (N=34028) | ||||
| Composite scores (five factors) | ||||
| 0/1/2 | 1357 | 19 | 23 004 | 1.00 (reference) |
| 3 | 10 088 | 88 | 175 171 | 0.67 (0.41–1.09) |
| 4 | 15 256 | 120 | 269 223 | 0.52 (0.32–0.84) |
| 5 | 7327 | 52 | 130 477 | 0.47 (0.28–0.79) |
| Ptrend | 0.003 | |||
| PAR (95% CI) | 0.41 (0.18–0.60) | |||
| Composite Z-scores (five factors) | ||||
| 1st Quartile | 8507 | 85 | 145 331 | 1.00 (reference) |
| 2nd Quartile | 8507 | 66 | 149 599 | 0.76 (0.55–1.05) |
| 3rd Quartile | 8507 | 65 | 151 211 | 0.70 (0.50–0.96) |
| 4th Quartile | 8507 | 63 | 151 733 | 0.66 (0.48–0.92) |
| Ptrend | 0.011 | |||
Abbreviations: CI=confidence interval; HR=hazard ratio; PAR=population attributable risk.
a
Model adjusted for age at baseline interview (in years), baseline interview year (1993–1995, 1996–1998), father's dialect (Cantonese, Hokkien), and education (no formal education, primary education, ⩾secondary education).