Table 1.
Characteristics of the cohort according to treatment type, KPNC 2000-2009 (n=2,412)
| Characteristics | No Diabetes Medication (n=1,578) |
Metformin-Only (n=457) |
Metformin Plus Other (n=377) |
|---|---|---|---|
| Age at Baseline, years | |||
| 40-49 | 54 (3.4) | 27 (5.9) | 33 (8.8) |
| 50-54 | 164 (10.4) | 71 (15.5) | 79 (21.0) |
| 55-59 | 199 (12.6) | 83 (18.2) | 80 (21.2) |
| 60-64 | 289 (18.3) | 94 (20.6) | 72 (19.1) |
| 65-69 | 322 (20.4) | 74 (16.2) | 64 (17.0) |
| 70-74 | 318 (20.2) | 73 (16.0) | 32 (8.5) |
| 75+ | 232 (14.7) | 35 (7.7) | 17 (4.5) |
| Sex | |||
| Female | 575 (36.4) | 178 (38.9) | 149 (39.5) |
| Male | 1,003 (63.6) | 279 (61.1) | 228 (60.5) |
| Race/Ethnicity | |||
| Non-Hispanic white | 943 (59.8) | 253 (55.4) | 222 (58.9) |
| Hispanic | 199 (12.6) | 64 (14.0) | 57 (15.1) |
| Black | 112 (7.1) | 33 (7.2) | 16 (4.2) |
| Asian/Pacific Islander | 216 (13.7) | 76 (16.6) | 48 (12.7) |
| Other* | 108 (6.8) | 31 ( 6.8) | 34 (9.0) |
| BMI Closest to Baseline Exam | |||
| <25.0 | 208 (13.2) | 42 (9.2) | 30 (8.0) |
| 25.0-29.9 | 484 (30.7) | 109 (23.9) | 76 (20.2) |
| 30+ | 801 (50.8) | 279 (61.1) | 252 (66.8) |
| Unknown | 85 (5.4) | 27 (5.9) | 19 (5.0) |
| Indication for Repeat Exam | |||
| Surveillance | 844 (53.5) | 279 (61.1) | 206 (54.6) |
| Diagnostic | 734 (46.5) | 178 (38.9) | 171 (45.4) |
| Recurrent Adenoma | |||
| No | 839 (53.2) | 261 (57.1) | 195 (51.7) |
| Any | 739 (46.8) | 196 (42.9) | 182 (48.3) |
| Mean HbA1c, Mean (SD) (n=2,293) | 6.18 (0.59) | 6.73 (0.72) | 7.35 (0.88) |
| Time to Repeat Exam, Median (IQR) | 4.1 (2.4) | 4.9 (2.5) | 5.2 (2.6) |
*
Other race/ethnicity includes Native American, Multiracial/other, and unknown