Unadjusted baseline participant characteristics by fasting plasma glucose quartile for women (n=1019)*
| Quartile 1 (59–87 mg/dL) | Quartile 2 (87–92 mg/dL) | Quartile 3 (92–98 mg/dL) | Quartile 4 (98–388 mg/dL) | p Value | |
|---|---|---|---|---|---|
| N | 249 | 260 | 253 | 257 | |
| Age (years) | 68.2 (12.6) | 71.2 (11.7) | 72.6 (11.0) | 73.0 (10.5) | <0.001 |
| Race | |||||
| Caucasian (%) | 83 | 82 | 79 | 82 | 0.87 |
| Education | |||||
| More than high school (%) | 72 | 68 | 70 | 74 | 0.02 |
| Height (m) | 1.6 (0.07) | 1.6 (0.06) | 1.6 (0.06) | 1.6 (0.07) | 0.09 |
| Weight (kg) | 61.4 (9.5) | 63.3 (11.8) | 62.5 (10.8) | 67.8 (14.1) | <0.001 |
| Exercise ≥3 times/week (%) | 73 | 67 | 68 | 67 | 0.43 |
| Chronic disease (%)† | 53 | 54 | 57 | 61 | 0.24 |
| Peripheral neuropathy (%) | 12 | 14 | 11 | 13 | 0.75 |
| Fasting glucose (mg/dL) | 83 (3.9) | 89 (1.4) | 95 (1.98) | 109 (25.3) | <0.001 |
| 2 h glucose (mg/dL) | 119 (34.9) | 127 (39.9) | 139 (38.5) | 159 (54.2) | <0.001 |
| Grip strength (kg) | 20.9 (5.3) | 19.7 (5.4) | 19.6 (5.4) | 20.1 (5.9) | 0.03 |
*Means (SD) are shown for continuous variables.
†The presence of at least one chronic disease: cancer (excluding non-melanoma skin cancer), lung surgery or emphysema, myocardial infarction or angina, hypertension, osteoporosis, arthritis, or stroke.