Table 4. Secondary Surrogate Health Outcome Results by Group.
| Outcome | Free Distribution Group | Usual Access Group |
|---|---|---|
| Hemoglobin A1c, % | ||
| No. | 73 | 68 |
| Baseline, mean (SD) | 8.20 (1.86) | 8.15 (1.85) |
| Follow-up, mean (SD) | 7.69 (1.50) | 8.04 (1.58) |
| Difference (95% CI) | −0.38 (−0.76 to 0.00) | NA |
| P value | .05 | NA |
| Systolic blood pressure, mm Hg | ||
| No. | 105 | 88 |
| Baseline, mean (SD) | 137 (19) | 135 (17) |
| Follow-up, mean (SD) | 132 (16) | 139 (19) |
| Difference (95% CI) | −7.2 (−11.7 to −2.8) | NA |
| P value | .002 | NA |
| Diastolic blood pressure, mm Hg | ||
| No. | 105 | 88 |
| Baseline, mean (SD) | 81 (13) | 81 (11) |
| Follow-up, mean (SD) | 78 (12) | 80 (13) |
| Difference (95% CI) | −2.0 (−5.0 to 1.0) | NA |
| P value | .19 | NA |
| LDL cholesterol level, mg/dL | ||
| No. | 48 | 40 |
| Baseline, mean (SD) | 88.9 (38.7) | 77.3 (34.8) |
| Follow-up, mean (SD) | 81.2 (34.8) | 81.2 (42.5) |
| Difference (95% CI) | −2.3 (−14.7 to 10.0) | NA |
| P value | .70 | NA |
Abbreviations: LDL, low-density lipoprotein; NA, not applicable.
SI conversion factors: To convert LDL cholesterol to millimoles per liter, multiply by 0.0259; hemoglobin A1c to proportion of total hemoglobin, multiply by 0.01.