122 Chapter 6 Table 6.2. Baseline characteristics of the study sample per subgroup. S: subgroup; BMI: body mass index. S1 N=368 S2 N=161 S3 N=425 S4 N=239 S5 N=171 S6 N=333 S7 N=98 Age (years) 74.4 ± 4.7 77.5 ± 5.3 77.8 ± 4.9 73.4 ± 4.1 75.6 ± 5.1 74.3 ± 4.8 74.2 ± 4.8 Time to dementia follow-up (years) 10.33 ± 2.02 8.89 ± 2.80 9.27 ± 2.93 10.89 ± 1.83 9.94 ± 2.33 10.36 ± 2.25 10.41 ± 2.33 Female sex 73% 52% 50% 74% 65% 54% 70% Mild cognitive impairment 7% 11% 12% 3% 9% 5% 3% BMI (kg/m2) 26.74 ± 4.29 27.35 ± 4.29 27.02 ± 4.47 27.18 ± 4.07 26.85 ± 4.11 26.53 ± 4.13 26.99 ± 4.07 Hypertension 75% 88% 81% 76% 80% 70% 68% Type 2 diabetes 6% 14% 10% 6% 10% 6% 9% Cholesterol (mmol/L) 5.82 ± 1.10 5.44 ± 1.08 5.67 ± 1.15 5.91 ± 1.16 5.55 ± 1.20 5.77 ± 1.04 5.75 ± 1.10 Smoking status Never 49% 35% 45% 47% 44% 44% 54% Former 41% 53% 47% 42% 44% 44% 38% Current 9% 11% 8% 10% 12% 12% 8% Coronary artery disease 10% 24% 16% 14% 19% 10% 10% Data are shown as means ± SD or percentages of individuals per subgroup. Baseline characteristics and cardiovascular risk factors were compared between subgroups with chi-square test for binary variables, and one-way ANOVAs for continuous variables. S, subgroup; BMI, body mass index; SD, standard deviation.
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