Table 2 Tea Drinking Habits and Odds Ratios (95%Cl) among Cases and Controls
Variables | Oolong tea drinking (n = 518) | Green tea drinking(n = 210) | Other tea drinking(n = 249) | Tea drinking(n = 1270) | ||||
|---|---|---|---|---|---|---|---|---|
ORa(95% CI) | ORb(95% CI) | ORa(95% CI) | ORb(95% CI) | ORa(95% CI) | ORb(95% CI) | ORa(95% CI) | ORb(95% CI) | |
Tea consumption | ||||||||
 No | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
 Yes | 1.64 (1.14,2.36) | 1.39 (0.94,2.05) | 0.43 (0.27,0.68) | 0.43 (0.26,0.71) | 1.07 (0.72,1.59) | 0.91 (0.59,1.39) | 1.12 (0.82,1.52) | 0.92 (0.66,1.28) |
Frequency of tea consumption | ||||||||
 Never drinking | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
 1~5 times/week | 2.51 (1.49,4,23) | 2.23 (1.29,3.86) | 1.31 (0.68.2.54) | 1.36 (0.62,2.97) | 1.05 (0.59,1.87) | 1.12 (0.60,2.09) | 1.48 (0.99,2.22) | 1.35 (0.88,2.08) |
  ≥ 5 times/week | 1.52 (1.04,2.22) | 1.28 (0.85,1.92) | 0.38 (0.23,0.62) | 0.40 (0.23,0.69) | 1.08 (0.69,1.69) | 0.83 (0.51,1.36) | 1.00 (0.72,1.39) | 0.78 (0.55,1.14) |
Duration of tea consumption | ||||||||
 Never drinking | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
 1~10 year | 1.41 (0.79,2.52) | 1.22 (0.66.2.26) | 0.17 (0.06,0.46) | 0.16 (0.05,0.52) | 1.25 (0.55,2.08) | 1.47 (0.61,3.55) | 0.82 (0.52,1.30) | 0.75 (0.46,1.23) |
  ≥ 10 year | 1.78 (1.20,2.63) | 1.26 (0.68,2.34) | 0.55 (0.34,0.90) | 0.57 (0.33,0.98) | 0.98 (0.64,1.52) | 0.78 (0.48,1.25) | 1.16 (0.84,1.61) | 0.91 (0.64,1.30) |
Tea temperature | ||||||||
 Never drinking | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.000 | 1.00 |
 warm | 0.75 (0.41,1.36) | 0.89 (0.42,1.67) | 0.29 (0.13,0.65) | 0.40 (0.15,1.03) | 0.73 (0.35,1.52) | 0.84 (0.39,1.81) | 0.55 (0.35,0.86) | 0.71 (0.44,1.15) |
 hot | 1.96 (1.34,2.87) | 1.60 (1.06,2.41) | 0.49 (0.30,0.80) | 0.45 (0.26.0.77) | 1.10 (0.71,1.68) | 0.88 (0.55,1.41) | 1.28 (0.93,1.76) | 0.94 (0.67,1.34) |