Table 2.
Change in A1C and LDL cholesterol testing rates and values
| All | Intervention group |
|||
|---|---|---|---|---|
| A | B | C | ||
| Control | Learning cases | Cases plus expert | ||
| A1C testing rate (n) | 2,020 | 691 | 725 | 604 |
| 12 months preintervention (%) | 90.8 | 90.9 | 91.6 | 89.6 |
| 12 months postintervention (%) | 89.2 | 90.2 | 88.9 | 88.2 |
| Change in A1C test rate (%) | −1.6 | −0.7 | −2.7 | −1.4 |
| Time (P = 0.07) | Condition P = 0.79 | Time-by-condition P = 0.63 | ||
| Last A1C value (mean) (n) | 1,686 | 578 | 601 | 507 |
| 12 months preintervention | 7.38 | 7.33 | 7.47 | 7.32 |
| 12 months postintervention | 7.45 | 7.39 | 7.46 | 7.50 |
| Change in A1C value (%) | 0.07 | 0.06 | −0.01 | 0.18 |
| Time P = 0.009 | Condition P = 0.58 | Time-by-condition P = 0.04 | ||
| Last A1C value, patients on insulin (mean) (n) | 526 | 172 | 199 | 155 |
| 12 month preintervention | 7.95 | 7.87 | 8.02 | 7.95 |
| 12 month postintervention | 7.92 | 7.88 | 7.85 | 8.03 |
| Change in A1C value | −0.03 | +0.01 | −0.17 | +0.08 |
| Time P = 0.69 | Condition P = 0.74 | Time-by-condition P = 0.15 | ||
| LDL cholesterol testing rate (n) | 2,020 | 691 | 725 | 604 |
| 12 months preintervention (%) | 71.6 | 74.2 | 70.2 | 70.2 |
| 12 months postintervention (%) | 73.6 | 73.7 | 74.9 | 72.1 |
| Change in LDL cholesterol test rate (%) | +2.0 | −0.5 | +4.7 | +1.9 |
| Time P = 0.15 | Condition P = 0.76 | Time-by-condition P = 0.30 | ||
| Last LDL cholesterol value (mean) (n)* | 1,178 | 412 | 419 | 347 |
| 12 month preintervention | 106.0 | 107.0 | 106.3 | 104.5 |
| 12 month postintervention | 102.6 | 102.9 | 103.9 | 100.8 |
| Change in LDL cholesterol value | −3.4 | −4.1 | −2.4 | −3.7 |
| Time P < 0.001 | Condition P = 0.63 | Time-by-condition P = 0.67 | ||
*Those with test values both pre- and postintervention. †Those with A1C values and on insulin both pre- and postintervention.