Table 2.
Incidence rates of diabetes by growth period and by 5-year follow-up intervals
| Length of follow-up | Early childhood a (n=2100) |
Early adolescence a (n=1558) |
Late adolescence a (n=1418) |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cases | n | PY | I | Cases | n | PY | I | Cases | n | PY | I | |
|
| ||||||||||||
| < 5 years | 32 | 2100 | 9820.6 | 3.3 | 33 | 1558 | 7116.7 | 4.6 | 59 | 1418 | 6361.5 | 9.3 |
| 5 to < 10 years | 45 | 1711 | 7199.0 | 6.3 | 48 | 1220 | 5216.9 | 9.2 | 96 | 1060 | 4447.6 | 21.6 |
| 10 to < 15 years | 49 | 1196 | 5104.1 | 9.6 | 68 | 893 | 3856.7 | 17.6 | 90 | 742 | 3189.4 | 28.2 |
| 15 to < 20 years | 78 | 870 | 3768.5 | 20.7 | 87 | 662 | 2777.6 | 31.3 | 76 | 528 | 2113.1 | 36.0 |
| 20 to < 25 years | 86 | 652 | 2713.8 | 31.7 | 79 | 450 | 1726.7 | 45.8 | 59 | 325 | 1191.4 | 49.5 |
| Total | 290 | 28606.0 | 10.1 | 315 | 20694.6 | 15.2 | 380 | 17303.0 | 22.0 | |||
n, number of participants followed; PY, person-years in a 5-year interval of follow-up; I, diabetes incidence rate in cases per 1000 person-years.
Pre-adolescence is birth to ∼8yr, early adolescence is ∼8yr to ∼13yr, and late adolescence is ∼13yr to ∼18yr (see Methods for precise definitions of the three growth periods).