a significant trendp = 0.04
Individuals with the highest adherence to an unhealthful plant-based diet did not show steeper rates of cognitive decline compared to those with lowest adherence (difference T1 vs T3: − 0.04 [− 0.11, 0.04], p = 0.33), though the continuous analysis indicated a significant trend (β per 10-point increment: − 0.05 [− 0.09, 0.00], p = 0.04).