Table 2 Preload and manual IOL operation time by hospital
Hospital | Preload (s) | Manual (s) | Differencea | P-value | ||
|---|---|---|---|---|---|---|
N | Mean ± SD | N | Mean ± SD | |||
Overall | 1591 | 353.84 ± 110.28 | 1000 | 367.46 ± 126.82 | -3.71% | 0.004* |
Hospital A | 253 | 229.17 ± 55.64 | 308 | 253.86 ± 52.30 | -9.73% | < 0.001** |
Hospital B | 295 | 456.65 ± 89.81 | 98 | 452.37 ± 97.88 | 0.95% | 0.690 |
Hospital C | 186 | 277.15 ± 22.00 | 119 | 286.02 ± 10.17 | -3.10% | < 0.001** |
Hospital D | 151 | 493.79 ± 75.10 | 149 | 508.76 ± 76.07 | -2.94% | 0.087 |
Hospital E | 230 | 298.57 ± 68.59 | 60 | 342.91 ± 73.51 | -12.93% | < 0.001** |
Hospital F | 141 | 385.67 ± 55.50 | 138 | 410.33 ± 74.16 | -6.01% | 0.002* |
Hospital G | 184 | 332.82 ± 26.87 | 60 | 339.97 ± 55.74 | -2.10% | 0.184 |
Hospital H | 151 | 396.46 ± 93.31 | 68 | 551.49 ± 127.63 | -28.11% | < 0.001** |