| Audit criterion | Period | |||||
| 4th quarter 2003 | 1st quarter 2004 | 2nd quarter 2004 | Follow-up | p Value | ||
| Patient wearing wristband | 81.8% | 96.2% | 99.6% | 98.8% | <0.001 | |
| 75.9%–86.7% | 93.1%–98.2% | 97.8%–100% | 96.6%–99.8% | |||
| 175/214 | 253/263 | 254/255 | 250/253 | |||
| Check of patient identity performed | 62.6% | 81.7% | 88.2% | 81.4% | <0.001 | |
| 55.8%–69.1% | 76.5%–86.2% | 83.6%–91.9% | 76.1%–86.0% | |||
| 134/214 | 215/263 | 225/255 | 206/253 | |||
| Identity data obtained from open question to patient | 53.0% | 71.2% | 72.0% | 77.7% | <0.001 | |
| 44.2%–61.7% | 64.6%–77.1% | 65.6%–77.8% | 71.4%–83.2% | |||
| 71/134 | 153/215 | 162/225 | 160/206 | |||
| All identity data (first and last names, date of birth) obtained | 19.4% | 50.2% | 73.8% | 70.9% | <0.001 | |
| 13.1%–27.1% | 43.4%–57.1% | 67.5%–79.4% | 64.2%–77.0% | |||
| 26/134 | 108/215 | 166/225 | 146/206 | |||
| Check complete (identity data compared with all three information sources: patient’s wristband, operating theatre schedule and patient’s record) | 41.0% | 70.7% | 90.7% | 82.5% | <0.001 | |
| 32.6%–49.9% | 64.1%–76.7% | 86.1%–94.1% | 76.6%–87.4% | |||
| 55/134 | 152/215 | 204/225 | 170/206 | |||
| Full compliance with protocol when performing patient identity check | 9.7% | 38.1% | 59.1% | 58.7% | <0.001 | |
| 5.3%–16.0% | 31.6%–45.0% | 52.4%–65.6% | 51.7%–65.5% | |||
| 13/134 | 82/215 | 133/225 | 121/206 | |||
| Surgical site signed | 75.8% | 78.3% | 81.5% | 86.4% | 0.08 | |
| 68.2%–82.4% | 71.7%–84.0% | 74.9%–87.0% | 80.4%–91.1% | |||
| 116/153 | 148/189 | 141/173 | 152/176 | |||
| Check of surgical site performed | 77.1% | 92.6% | 90.2% | 94.3% | <0.001 | |
| 69.6%–83.5% | 87.9%–95.9% | 84.7%–94.2% | 89.8%–97.2% | |||
| 118/153 | 175/189 | 156/173 | 166/176 | |||
| Surgical site information obtained from open question to patient | 57.6% | 73.1% | 80.1% | 84.9% | <0.001 | |
| 48.2%–66.7% | 65.9%–79.6% | 73.0%–86.1% | 78.6%–90.0% | |||
| 68/118 | 128/175 | 125/156 | 141/166 | |||
| Check complete (site of surgery data compared with all three information sources: surgeon’s check, operating theatre schedule, and patient’s record) | 51.7% | 67.4% | 76.9% | 74.7% | <0.001 | |
| 42.3%–61.0% | 59.9%–74.3% | 69.5%–83.3% | 67.4%–81.1% | |||
| 61/118 | 118/175 | 120/156 | 124/166 | |||
| Full compliance with protocol when performing site of surgery check | 32.2% | 52.0% | 64.7% | 63.3% | <0.001 | |
| 23.9%–41.4% | 44.3%–59.6% | 56.7%–72.2% | 55.4%–70.6% | |||
| 38/118 | 91/175 | 101/156 | 105/166 | |||
*For each variable, the data from top to bottom are: proportion of observations satisfying audit criterion; 95% confidence interval; and the number of observations complying with audit criterion/total number of observations requiring compliance with audit criterion.