From:  Body mass, blood pressure, and cognitive functioning among octogenarians and centenarians

Mean group differences in cognitive functioning for body mass and BP groups

BMI (kg/m2)Cognitive score for normal BPCognitive score for high BPF
< 18.512.59 (n = 22)a17.80 (n = 5)1.09
18.5–24.919.25 (n = 73)20.38 (n = 48)0.48
25–29.921.43 (n = 30)21.80 (n = 39)b0.87
≥ 3015.88 (n = 8)20.67 (n = 12)1.79
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Total N = 237. Means with different superscripts are significantly different. F: F-test; a lowest group; b highest group