Table 2.
Characteristics of the study population at MPS-baseline, overall and by incident diabetes status (1999–2000)
| Characteristic | Total(N = 1,299) | No incident diabetes (N = 1,167) | Incident diabetic (N = 132) | P |
|---|---|---|---|---|
| Age (years) | 49.03 ± 2.65 | 49.00 ± 2.65 | 49.29 ± 2.73 | <0.001 |
| Site | <0.001 | |||
| Los Angeles | 349 (26.87) | 325 (27.85) | 24 (18.18) | |
| Oakland | 285 (21.94) | 260 (22.28) | 25 (18.94) | |
| Michigan | 234 (18.01) | 191 (16.37) | 43 (32.58) | |
| Pittsburgh | 218 (16.78) | 191 (16.37) | 27 (20.45) | |
| Boston | 213 (16.40) | 200 (17.14) | 13 (9.85) | |
| Race/ethnicity | <0.001 | |||
| White | 672 (51.73) | 620 (53.13) | 52 (39.39) | |
| Black | 270 (20.79) | 222 (19.02) | 48 (36.36) | |
| Chinese | 161 (12.39) | 146 (12.51) | 15 (11.36) | |
| Japanese | 196 (15.09) | 179 (15.34) | 17 (12.88) | |
| Education levels | 0.067 | |||
| High schools or less | 223 (17.17) | 199 (17.05) | 24 (18.18) | |
| Some college | 409 (31.49) | 354 (30.33) | 55 (41.67) | |
| College | 325 (25.02) | 300 (25.71) | 25 (18.94) | |
| Postcollege | 335 (25.79) | 308 (26.39) | 27 (20.45) | |
| Missing | 7 (0.53) | 6 (0.51) | 1 (0.76) | |
| Physical activity score | 7.86 ± 1.74 | 7.93 ± 1.75 | 7.32 ± 1.61 | <0.001 |
| Menopause status | 0.127 | |||
| Premenopause | 155 (11.93) | 147 (12.60) | 79 (59.85) | |
| Perimenopause | 761 (58.58) | 682 (58.44) | 20 (15.15) | |
| Postmenopause | 179 (13.78) | 159 (13.62) | 8 (6.06) | |
| Hormone therapy | 204 (15.70) | 179 (15.34) | 25 (18.94) | |
| Smoking status | 0.214 | |||
| Never | 819 (63.05) | 743 (63.67) | 76 (57.58) | |
| Former | 346 (26.64) | 310 (26.52) | 36 (27.27) | |
| Current | 133 (10.24) | 113 (9.68) | 20 (15.15) | |
| Missing | 1 (0.08) | 1 (0.99) | 0 (0.00) | |
| Total caloric intake (kcal/d) | 1,808 ± 692 | 1,789 ± 687 | 2,001 ± 0.709 | <0.001 |
| Body mass index (kg/m2) | 27.48 ± 6.87 | 26.86 ± 6.48 | 33.07 ± 7.69 | <0.001 |
Data are expressed as mean ± standard deviation (SD) or n (%).