Table 3.
Standard deviation calculation for the mean number of inappropriate prescribing tasks as a percentage of total prescribing in pre- and post-intervention weekends
| Weekend | Inappropriate prescribing tasks as a percentage of total prescribing tasks | Mean | (Score – mean)2 | SD (√total of previous column) | |
|---|---|---|---|---|---|
| Pre-intervention | 1 | 13.6% | 1.88 | ||
| Pre-intervention | 2 | 12.7% | 5.15 | ||
| Pre-intervention | 3 | 18.6% | 14.97% | 13.18 | 4.50 |
| Post-intervention | 4 | 9.0% | 0.94 | ||
| Post-intervention | 5 | 7.8% | 0.05 | ||
| Post-intervention | 6 | 7.2% | 8.03% | 0.53 | 1.23 |
Abbreviation: SD, standard deviation.