Table 1.
Characteristics of 18-year-old men who were or were not subsequently diagnosed with IHD.
| IHD (N=38,142) | No IHD (N=1,509,265) | |||
|---|---|---|---|---|
|
| ||||
| Mean (SD) | n (%) | Mean (SD) | n (%) | |
| Year of military conscription | 1975 (4.7) | 1982 (7.7) | ||
| 1969–1979 | 32,014 (83.9) | 585,119 (38.8) | ||
| 1980–1989 | 5,522 (14.5) | 545,386 (36.1) | ||
| 1990–1997 | 606 (1.6) | 378,760 (25.1) | ||
| Aerobic fitness (Watts) | 231.9 (43.0) | 267.8 (54.4) | ||
| Lowest tertile | 23,408 (61.4) | 487,930 (32.3) | ||
| Middle tertile | 11,528 (30.2) | 508,994 (33.7) | ||
| Highest tertile | 3,206 (8.4) | 512,341 (34.0) | ||
| Muscular strength (Newtons) | 2016 (312) | 1985 (456) | ||
| Lowest tertile | 12,068 (31.6) | 498,830 (33.1) | ||
| Middle tertile | 15,632 (41.0) | 507,899 (33.6) | ||
| Highest tertile | 10,442 (27.4) | 502,536 (33.3) | ||
| BMIa | 21.8 (3.0) | 21.6 (2.8) | ||
| Normal | 34,396 (90.2) | 1,393,055 (92.3) | ||
| Overweight or obese | 3,746 (9.8) | 116,210 (7.7) | ||
| Height (cm) | 165.7 (44.7) | 175.3 (26.5) | ||
| <175 (5 ft. 9 in.) | 10,053 (27.3) | 338,542 (22.7) | ||
| 175–184 | 22,380 (60.7) | 871,233 (58.4) | ||
| ≥185 (6 ft. 1 in.) | 4,412 (12.0) | 282,223 (18.9) | ||
| Weight (kg) | 65.1 (21.3) | 68.3 (14.5) | ||
| <60 (132 lbs.) | 5,639 (15.3) | 193,728 (13.0) | ||
| 60–79 | 26,196 (71.1) | 1,096,366 (73.5) | ||
| ≥80 (176 lbs.) | 5,010 (13.6) | 201,904 (13.5) | ||
| Family history of IHD | ||||
| No | 12,452 (32.6) | 945,423 (62.6) | ||
| Yes | 25,690 (67.4) | 563,842 (37.4) | ||
| Education (years) | ||||
| <12 | 10,229 (26.8) | 226,604 (15.0) | ||
| 12–14 | 16,270 (42.7) | 667,319 (44.2) | ||
| ≥15 | 11,643 (30.5) | 615,342 (40.8) | ||
| Neighborhood SES | ||||
| Low | 6,962 (18.2) | 232,417 (15.4) | ||
| Medium | 27,190 (71.3) | 995,002 (65.9) | ||
| High | 3,990 (10.5) | 281,846 (18.7) | ||
a
BMI was categorized using CDC definitions for children and adolescents aged 2 to 19 years: “overweight or obese” is defined as ≥ 85th percentile from the CDC’s 2000 sex-specific BMI-for-age growth charts, which corresponds to BMI ≥ 25.6 for 18-year-old males.
BMI = body mass index, IHD = ischemic heart disease, SES = socioeconomic status.