Table 6.
Frequency of elevated HbA1c and blood pressure results followed by documentation of review by a doctor and medication change over the study period
| Follow up | Baseline | Year 1 | Year 2 | Risk Ratios (95% CI)‡ Year 1 vs baseline | Risk Ratios (95% CI)‡ Year 2 vs baseline |
| HbA1c recorded in previous 12 months* | 291 | 296 | 317 | ||
| Elevated HbA1c† (%) | 173 (59%) | 179 (60%) | 169 (53%) | 1.02 (0.89, 1.16) | 0.90 (0.78, 1.03) |
| Reviewed by a doctor (%) | 45 (26%) | 82 (46%) | 4 (2%) | 1.76 (1.31, 2.37) | 0.09 (0.03, 0.25) |
| Medication adjusted (%) | 18 (10%) | 43 (24%) | 5 (3%) | 2.31 (1.39, 3.84) | 0.28 (0.11, 0.75) |
| BP recorded in previous 12 months* | 615 | 559 | 588 | ||
| Elevated BP† (%) | 145 (24%) | 154 (28%) | 151 (26%) | 1.17 (0.96, 1.42) | 1.09 (0.89, 1.33) |
| Reviewed by a doctor (%) | 30 (21%) | 62 (40%) | 5 (3%) | 1.95 (1.34, 2.82) | 0.16 (0.06, 0.40) |
| Medication adjusted (%) | 19 (13%) | 33 (21%) | 5 (3%) | 1.64 (0.98, 2.74) | 0.25 (0.10, 0.66) |
* As multiple HbA1c and BP results might be documented in the medical record for each patient in previous 12 month period, we only collected, when available, the two most recent HbA1c results and the three most recent BP results for each audit interval.
† Elevated HbA1c was defined as HbA1c > 8.0%. Elevated BP was defined as BP > 140/90 mmHg.
‡ Risk ratios significant at 0.05 level are shown in bold.