Table 2.
Proportions of children underweight or overweight at ages 9 or 13 years who were overweight or obese at age 50
| Body mass index percentile group | No (%) of children measured at both time points | No (%) overweight age 50* | No (%) obese age 50† | P value (χ2 for trend) | No (%) in top quarter of % body fat age 50‡ | P (χ2 for trend) |
|---|---|---|---|---|---|---|
| Age 9: | ||||||
| <25th | 99 (23) | 37/99 (37) | 8/99 (8) | <0.001 | 17/73 (23) | 0.23 |
| 25-74th | 244 (58) | 141/244 (58) | 29/244 (12) | 38/185 (20) | ||
| 75-90th | 57 (13) | 25/57 (44) | 16/57 (28) | 13/37 (35) | ||
| >90th | 24 (6) | 8/24 (33) | 10/24 (42) | 5/17 (29) | ||
| Age 13: | ||||||
| <25th | 119 (32) | 45/119 (38) | 6/119 (5) | <0.001 | 23/93 (24) | 0.014 |
| 25-74th | 178 (47) | 96/178 (54) | 25/178 (14) | 22/128 (17) | ||
| 75-90th | 40 (11) | 22/40 (55) | 9/40 (22) | 8/30 (27) | ||
| >90th | 38 (10) | 16/38 (42) | 17/38 (45) | 14/28 (50) | ||
*
Body mass index 24-30. †Body mass index>30. ‡Data on % body fat were available for fewer adults than data on body mass index