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. 2017 Mar 1;24(3):290–300. doi: 10.5551/jat.35766

Table 1. Baseline characteristics in the Ohasama Study, Japan, 1998.

Variables, n (%) Total
n = 2065
Age category
P value
60–74 years
n = 1502
≥ 75 years
n = 563
Men 840 (40.7) 648 (43.1) 192 (34.1) <0.001
Body mass index <0.001
    <18.5 kg/m2 98 (5.6) 55 (4.1) 43 (10.8)
    18.5.24.9 kg/m2 1134 (65.1) 870 (64.6) 264 (66.5)
    ≥ 25.0 kg/m2 511 (29.3) 421 (31.3) 90 (22.7)
Hypertension 965 (46.7) 656 (43.7) 309 (54.9) <0.001
Diabetes mellitus 262 (12.7) 198 (13.2) 64 (11.4) 0.27
Hypercholesterolemia 266 (12.9) 205 (13.7) 61 (10.8) 0.089
Heart disease 219 (10.6) 133 (8.9) 86 (15.3) <0.001
Kidney disease 66 (3.2) 38 (2.5) 28 (5.0) 0.005
Smoking status <0.001
    Current smoker 337 (16.3) 283 (18.8) 54 (9.6)
    Former smoker 211 (10.2) 158 (10.5) 53 (9.4)
    Never smoker 1517 (73.5) 1061 (70.6) 456 (81.0)
Current drinker 648 (31.4) 519 (34.6) 129 (22.9) <0.001
Married 1283 (70.7) 1058 (79.7) 225 (46.1) <0.001
Educational attainment, junior high school 1579 (84.8) 1148 (83.1) 431 (89.8) <0.001
Habitual exercise 0.030
    ≥ 3 hours/week 172 (9.6) 129 (9.7) 43 (9.4)
    1.2 hours/week 286 (16.0) 230 (17.3) 56 (12.2)
    Rarely/Never 1329 (74.4) 969 (73.0) 360 (78.4)
Parental history of hypertension 377 (18.3) 303 (20.2) 74 (13.1) <0.001
Parental history of stroke 566 (27.4) 436 (29.0) 130 (23.1) 0.007

Values are the number of participants (%). Values for body mass index, marital status, educational attainment, and habitual exercise were available for 1743, 1816, 1862, and 1787 participants, respectively. P denotes the significance of the difference between age categories using the chi-square test.