Proportion of subjects progressing to diabetes, months until progression, and rate of progression, by IFG stage
| . | Added IFG subjects (100–109 mg/dl) . | . | . | Original IFG subjects (110–125 mg/dl) . | . | . | Total (all subjects) . | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| . | Did not progress to original IFG . | Progressed to original IFG . | Total . | Initial IFG stage was added IFG . | Initial IFG stage was original IFG . | Total . | . | ||||
| n (%) | 3,753 (82.9) | 773 (17.1) | 4,526 | 773 (45.5) | 926 (54.5) | 1,699 | 5,452 | ||||
| Progressing to diabetes*†‡ | 201 (5.4) | 164 (21.2) | 365 (8.1) | 164 (21.2) | 249 (26.8) | 413 (24.3) | 614 (11.3) | ||||
| Months from 1st FPG measure in stage to progression of diabetes*‡ | 31.1 ± 23.2 | 54.1 ± 27.6 | 41.4 ± 25.8 | 29.5 ± 25.9 | 28.7 ± 26.5 | 29.0 ± 26.2 | 36.3 ± 27.9 | ||||
| Diabetes incidence per year*‡ | 0.91 | 3.24 | 1.34 | 5.16 | 5.87 | 5.56 | 1.95 | ||||
| . | Added IFG subjects (100–109 mg/dl) . | . | . | Original IFG subjects (110–125 mg/dl) . | . | . | Total (all subjects) . | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| . | Did not progress to original IFG . | Progressed to original IFG . | Total . | Initial IFG stage was added IFG . | Initial IFG stage was original IFG . | Total . | . | ||||
| n (%) | 3,753 (82.9) | 773 (17.1) | 4,526 | 773 (45.5) | 926 (54.5) | 1,699 | 5,452 | ||||
| Progressing to diabetes*†‡ | 201 (5.4) | 164 (21.2) | 365 (8.1) | 164 (21.2) | 249 (26.8) | 413 (24.3) | 614 (11.3) | ||||
| Months from 1st FPG measure in stage to progression of diabetes*‡ | 31.1 ± 23.2 | 54.1 ± 27.6 | 41.4 ± 25.8 | 29.5 ± 25.9 | 28.7 ± 26.5 | 29.0 ± 26.2 | 36.3 ± 27.9 | ||||
| Diabetes incidence per year*‡ | 0.91 | 3.24 | 1.34 | 5.16 | 5.87 | 5.56 | 1.95 | ||||
Data are n (%), means ± SD, or percent.
Among added IFG subjects, those who did and did not progress to original IFG differ significantly: P < 0.0001.
Among original IFG subjects, those whose initial IFG stage was added vs. original IFG differ significantly: P = 0.007.
Total added and original IFG subjects differ significantly: P < 0.0001.