Baseline Physiologic Characteristics of Patients in Study Practices
| Variable | Enhanced Practice, n=331 | Traditional Practice, n=279 | P Valuea | ||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Median | Mean | SD | Median | ||
| Continuous descriptors, t test, with median | 43.5 | 11.1 | 44.0 | 44.3 | 13.7 | 45.0 | .425 |
| Systolic blood pressure, mm Hg | 128.5 | 15.1 | 128.0 | 124.4 | 16.5 | 122.0 | .002 |
| Diastolic blood pressure, mm Hg | 80.5 | 10.4 | 80.0 | 77.2 | 9.9 | 79.0 | <.001 |
| HOMA-IR log transformation | 1.1 | 0.7 | 1.1 | 1.2 | 0.8 | 1.1 | .088 |
| NMRLP (nmol/L) | 1,692 | 502.8 | 1,647 | 1,527 | 475.0 | 1,474 | <.001 |
| PrimeScreenb AIM-HI | −0.1 | 0.4 | −0.1 | −0.1 | 0.4 | −0.0 | .910 |
| Total MET minutes, square root transformed | 24.9 | 19.7 | 21.3 | 27.6 | 21.2 | 23.0 | .123 |
| Continuous descriptors, nonparametric test | |||||||
| BMI | 37.0 | 5.7 | 35.8 | 36.8 | 6.0 | 35.0 | .292 |
| Fitnessc | 4.1 | 2.0 | 4.0 | 3.7 | 1.9 | 4.0 | .034 |
| SF-12 mentald | −0.3 | 1.1 | −0.2 | −0.3 | 1.1 | −0.1 | .522 |
| SF-12 physicald | −0.3 | 0.8 | −0.1 | −0.4 | 1.1 | −0.2 | .385 |
AIM-HI = Americans In Motion—Healthy Interventions; BMI = body mass index. HOMA-IR = homeostatic model assessment: insulin resistance; MET = metabolic equivalent test; NMRLP = nuclear magnetic resonance lipoprotein profiles; SF-12 = SF-12 Health Survey, a short form subset of the SF-36.
↵a For BMI, fitness, SF-12 mental, and SF-12 physical we used nonparametric Wilcoxon rank sum test. For systolic and diastolic blood pressures, HOMA-IR, NMRLP, and PrimeScreen, we used analysis of variance.
↵b PrimeScreen is a brief dietary screening tool.
↵c Scored on a range from 1 to 7, based on heart rate, age, and sex, with higher scores indicating greater physical fitness.
↵d Mental or physical component summary scores of the SF-12 Health Survey, a short form subset of the SF-36.