Table 2.
Bivariate analysis
| Feature | No. | Median HOMA-IR |
R* | P value |
|---|---|---|---|---|
| Age | ||||
| <65 | 2339 | 3.9 | ||
| ≥65 | 2018 | 3.5 | .08 | <.0001 |
| Male gender | ||||
| No | 1568 | 3.6 | ||
| Yes | 2789 | 3.7 | .04 | .01 |
| Race | ||||
| White | 3625 | 3.6 | ||
| Black | 501 | 3.8 | ||
| Other | 169 | 3.9 | ||
| Uncertain | 48 | 3.6 | .02 | .07 |
| Hispanic ethnicity | ||||
| No | 4192 | 3.7 | ||
| Yes | 151 | 4.1 | .04 | .02 |
| Modified Rankin Scale grade | 4353 | .03 | .06 | |
| Body mass index (kg/m2) | ||||
| <25 | 1149 | 2.7 | ||
| 25–29 | 1788 | 3.6 | ||
| 30–34 | 940 | 4.6 | ||
| 35+ | 459 | 5.4 | .41 | <.0001 |
| Abdominal obesity† | ||||
| Absent | 2078 | 3.0 | ||
| Present | 2225 | 4.1 | .33 | <.0001 |
| Waist-to-hip ratio obesity‡ | ||||
| Absent | 2966 | 3.5 | ||
| Present | 1325 | 4.1 | .13 | <.0001 |
| Systolic BP (mmHg) | ||||
| <130 | 1683 | 3.5 | ||
| 130+ | 2661 | 3.8 | .07 | <.0001 |
| Diastolic BP (mmHg) | ||||
| <85 | 2825 | 3.5 | ||
| 85+ | 1519 | 4.0 | .09 | <.0001 |
| Glucose (mg/dL) | ||||
| <100 | 2886 | 3.2 | ||
| 100+ | 1470 | 4.9 | .38 | <.0001 |
| TG/HDL | ||||
| <1.6 | 1029 | 2.8 | ||
| 1.6–2.3 | 1067 | 3.4 | ||
| 2.4–3.5 | 1105 | 3.9 | ||
| 3.6+ | 1138 | 4.7 | .35 | <.0001 |
Abbreviations: BP, blood pressure; HDL, high-density lipoprotein; HOMA-IR, homeostasis model assessment of insulin resistance; TG, triglyceride.
*
Spearman rank correlation coefficient.
†
Greater than 88 cm for women and greater than 102 cm for men.
‡
Greater than .9 in men and greater than .85 in women.