Table 3.

Odds ratios (ORs) and 95% confidence intervals (CIs) for the association between solanaceous vegetables intake and colorectal cancer risk.

Yearly solanaceous vegetables intake quartiles (kg/year)	Case	Control	Crude OR (95%CI)	Adjusted ORa (95%CI)
Potato
Q1	164	196	1.00	1.00
Q2	217	211	1.22 (0.93,1.61)	1.23 (0.85,1.76)
Q3	53	52	1.22 (0.79,1.89)	1.43 (0.81,2.51)
Q4	399	374	1.28 (0.99,1.65)	1.76 (1.26,2.47)
P for Trendb			0.293	0.007
Eggplant
Q1	302	177	1.00	1.00
Q2	192	189	0.62 (0.48,0.82)	0.65 (0.46,0.92)
Q3	193	208	0.49 (0.37,0.66)	0.71 (0.49,1.01)
Q4	146	259	0.29 (0.21,0.39)	0.42 (0.29,0.62)
P for Trend			< 0.001	<0.001
Sweet pepper
Q1	245	172	1.00	1.00
Q2	205	214	0.66 (0.50,0.88)	0.54 (0.37,0.78)
Q3	176	208	0.59 (0.45,0.79)	0.52 (0.35,0.75)
Q4	207	239	0.58 (0.44,0.78)	0.48 (0.33,0.70)
P for Trend			<0.001	<0.001
Tomato
Q1	260	188	1.00	1.00
Q2	197	194	0.73 (0.55,0.96)	0.73 (0.51,1.03)
Q3	219	215	0.72 (0.55,0.94)	0.76 (0.53,1.08)
Q4	157	236	0.43 (0.32,0.58)	0.59 (0.40,0.88)
P for Trend			<0.001	0.066
Total solanaceous vegetables
Q1	253	208	1.00	1.00
Q2	229	208	0.92 (0.71,1.20)	0.96 (0.68,1.35)
Q3	185	208	0.71 (0.54,0.93)	0.97 (0.68,1.40)
Q4	106	209	0.60 (0.45,0.81)	1.00 (0.68,1.50)
P for Trend			0.003	0.993
Total non-solanaceous vegetables
Q1	317	207	1.00	1.00
Q2	234	210	0.69 (0.53,0.91)	0.80 (0.57,1.12)
Q3	163	208	0.48 (0.36,0.64)	0.63 (0.43,0.91)
Q4	119	208	0.35 (0.26,0.48)	0.51 (0.34,0.77)
P for trend			<0.001	0.009

^aAdjusted by BMI, colon cancer in first-degree relative, smoking status, alcohol drinking, eating breakfast, and fried food, grilled food, and hot and spicy food intake as category variables; and total energy, total fruits, milk product and red meat intake as continuous variables.

^bTest for trends calculated with the median intake of each category of solanaceous vegetable intake as a continuous variable.

Bold values indicates statistical significance, which is defined as a two-side P < 0.05.