APOA1 and dementia: For ApoB/ApoA ratio, when compared with the lowest quarter (1·69 to 5·45), the highest quarter (8·12 to 37·1) was associated with a greater risk of dementia (HR, 1·23 [1·11, 1·37]) (p for trend=0·001), and with a higher value indicated a greater risk of dementia (HR, 1·09 [1·05, 1·13], per SD).