Table 4 Soy consumption and COPD risk
From: Soy consumption and risk of COPD and respiratory symptoms: a case-control study in Japan
Variable | Cases n (%) | Controls n (%) | OR* | 95% CI | p value |
|---|---|---|---|---|---|
Total soy foods (g/day) | p overall = 0.043 p trend = 0.001 | ||||
≤ 30.43 | 95 (34.2) | 85 (25.1) | 1 | ||
30.44 – 50.42 | 88 (31.7) | 85 (25.1) | 0.764 | (0.421, 1.386) | |
50.43 – 75.82 | 57 (20.5) | 85 (25.1) | 0.534 | (0.284, 1.002) | |
≥ 75.83 | 38 (13.7) | 84 (24.8) | 0.392 | (0.194, 0.793) | |
Tofu (g/day) | p overall = 0.019 p trend = 0.001 | ||||
≤ 7.53 | 90 (32.4) | 89 (26.2) | 1 | ||
7.54 – 18.05 | 98 (35.3) | 87 (25.6) | 0.997 | (0.559, 1.777) | |
18.06 – 28.68 | 50 (18.0) | 79 (23.2) | 0.735 | (0.384, 1.406) | |
≥ 28.69 | 40 (14.4) | 85 (25.0) | 0.378 | (0.190, 0.753) | |
Bean sprouts (g/day) | p overall = 0.003 p trend = 0.112 | ||||
≤ 1.67 | 84 (30.2) | 70 (20.6) | 1 | ||
1.68 – 5.34 | 84 (30.2) | 90 (26.5) | 0.454 | (0.240, 0.856) | |
5.35 – 5.36 | 64 (23.0) | 107 (31.5) | 0.302 | (0.160, 0.570) | |
≥ 5.37 | 46 (16.5) | 73 (21.5) | 0.374 | (0.180, 0.777) | |
Natto (g/day) | p overall = 0.295 p trend = 0.178 | ||||
Never | 108 (38.8) | 88 (25.9) | 1 | ||
≤ 10.70 | 103 (37.1) | 131 (38.5) | 0.625 | (0.362, 1.079) | |
10.71 – 39.30 | 38 (13.7) | 68 (20.0) | 0.637 | (0.322, 1.260) | |
≥ 39.31 | 29 (10.4) | 53 (15.6) | 0.578 | (0.280, 1.193) | |
Soy milk | p overall = 0.143 p trend = 0.568 | ||||
Never | 265 (95.3) | 300 (88.2) | 1 | ||
weekly drinkers | 8 (2.9) | 20 (6.0) | 0.340 | (0.116, 0.993) | |
daily drinkers | 5 (1.8) | 15 (4.5) | 0.927 | (0.232, 3.707) |