Fig. 2

Restricted cubic splines for the association of vegetable intake (A) and fruit intake (B) with the risk of total dementia. Solid lines represent the hazard ratio, and dashed lines represent the 95% Cl of the hazard ratio. Knots were placed at the 5th, 25th, 50th, 75th, and 95th percentiles (107, 197, 281, 362, and 530 g/day) of vegetable intake, and at the same percentiles (0, 32, 75, 107, and 214 g/day) of fruit inake. A reference point was set at the 5th percentile (107 g/day for vegetable intake and 0 g/day for fruit intake). The X-axis in each graph shows up to the 99th percentile vaule of vegtable intake (682 g/day) or fruit intake (325 g/day). The risk estimates were adjusted for age, sex, educational level, history of stroke, diabetes, systolic blood pressure, use of antihypertensive agents, electrocardiogram abnormalities, total cholesterol, body mass index, current drinking, current smoking, regular exercise, and intakes of total energy, protein, fat, and carbohydrate