Table 2 Baseline characteristics of study participants
From: Diabetes screening intervals based on risk stratification
Age between 30 and 44 | ||||
Total | St. Luke’s | Yamanashi | ||
Numbers | N = 41,400 | N = 32,820 | N = 8,580 | |
Age | 38.0 ± 3.9 | 37.8 ± 4.0 | 38.4 ± 3.8 | |
Gender, male | 19,572 (47.3%) | 15,085 (46.0%) | 4,487 (52.%) | |
Stratification | ||||
10-year cardiovascular risk Framingham Risk Score | Lowest risk (0–10%) | 40,434 (97.7%) | 32,247 (98.3%) | 8,187 (95.4%) |
Intermediate risk (10–20%) | 859 (2.1%) | 481 (1.5%) | 378 (4.4%) | |
High risk (over20%) | 107 (0.3%) | 92 (0.3%) | 15 (0.2%) | |
BMI category | Underweight (bmi <18 · 5) | 4,853 (11.7%) | 3,950 (12.0%) | 903 (10.5%) |
Normal (18 · 5 < =bmi < 25) | 29,382 (71.0%) | 23,365 (71.2%) | 6,017 (70.1%) | |
Overweight (25 < =bmi < 30) | 6,199 (15.0%) | 4,762 (14.5%) | 1,437 (16.8%) | |
Obese (30 < =bmi) | 966 (2.3%) | 743 (2.3%) | 223 (2.6%) | |
Baseline HbA1c | 5.3 ± 0.3 | 5.4 ± 0.3 | 5.2 ± 0.3 | |
Baseline BMI | 22.1 ± 3.3 | 22.0 ± 3.3 | 22.3 ± 3.4 | |
Current smoker | 8,562 (20.7%) | 5,733 (17.5%) | 2,829 (33.0%) | |
Age between 45 and 59 | ||||
Total | St. Luke’s | Yamanashi | ||
Numbers | N = 38,609 | N = 24,539 | N = 14,070 | |
Age | 51.6 ± 4.3 | 51.4 ± 4.3 | 51.9 ± 4.2 | |
Gender, male | 18,606 (48.2%) | 12,162 (49.6%) | 6,444 (45.8%) | |
Stratification | ||||
10-year cardiovascular risk Framingham Risk Score | Lowest risk (0–10%) | 28,298 (73.3%) | 18,673 (76.1%) | 9,625 (68.4%) |
Intermediate risk (10–20%) | 8,293 (21.5%) | 4,826 (19.7%) | 3,467 (24.6%) | |
High risk (over20%) | 2,018 (5.2%) | 1,040 (4.2%) | 978 (7.0%) | |
BMI category | Underweight (bmi <18 · 5) | 2,437 (6.3%) | 1748 (7.1%) | 689 (4.9%) |
Normal (18 · 5 < =bmi < 25) | 27,960 (72.4%) | 17,472 (71.2%) | 10,488 (74.5%) | |
Overweight (25 < =bmi < 30) | 7,440 (19.3%) | 4,767 (19.4%) | 2,673 (19.0%) | |
Obese (30 < =bmi) | 772 (2.0%) | 552 (2.2%) | 220 (1.6%) | |
Baseline HbA1c | 5.5 ± 0.4 | 5.5 ± 0.3 | 5.3 ± 0.4 | |
Baseline BMI | 22.7 ± 3.1 | 22.7 ± 3.2 | 22.8 ± 2.9 | |
Current smoker | 7,746 (20.1%) | 4,225 (17.2%) | 3,521 (25.0%) | |
Age between 60 and 74 | ||||
Total | St. Luke’s | Yamanashi | ||
N = 16,447 | N = 8,801 | N = 7,646 | ||
Age | 64.6 ± 3.8 | 65.0 ± 3.9 | 64.2 ± 3.7 | |
Gender, male | 8,106 (49.3%) | 4,513 (51.3%) | 3,593 (47.0%) | |
Stratification | ||||
10-year cardiovascular risk Framingham Risk Score | Lowest risk (0–10%) | 6,041 (36.7%) | 3,341 (37.9%) | 2,700 (35.3%) |
Intermediate risk (10–20%) | 6,276 (38.2%) | 3,356 (38.1%) | 2,920 (38.2%) | |
High risk (over20%) | 4,130 (25.1%) | 2,104 (23.9%) | 2,026 (26.5%) | |
BMI category | Underweight (bmi <18 · 5) | 933 (5.7%) | 573 (6.5%) | 360 (4.7%) |
Normal (18 · 5 < =bmi < 25) | 12,164 (74.0%) | 6,533 (74.2%) | 5,631 (73.4%) | |
Overweight (25 < =bmi < 30) | 3,164 (19.2%) | 1,606 (18.2%) | 1,558 (20.4%) | |
Obese (30 < =bmi) | 186 (1.1%) | 89 (1.0%) | 97 (1.3%) | |
Baseline HbA1c | 5.6 ± 0.4 | 5.6 ± 0.3 | 5.4 ± 0.4 | |
Baseline BMI | 22.8 ± 2.8 | 22.6 ± 2.9 | 23.0 ± 2.8 | |
Current smoker | 1,995 (12.1%) | 855 (9.7%) | 1,140 (14.9%) | |