Mean volume, SD and range of volumes measured with each device n=277, ideal volume=5.0 ml
| Volume (ml) measured with | |||
|---|---|---|---|
| Metal spoon | Calibrated spoon | Syringe | |
| Mean | 3.99 (95% CI 3.90 to 4.08) | 5.00 (95% CI 4.91 to 5.09) | 5.13 (95% CI 5.09 to 5.17) |
| SD | 0.749 | 0.762 | 0.348 |
| Range | 0.83–6.51 | 1.08–6.98 | 1.52–6.54 |
| 95% Reference range | 2.49–5.49 | 3.48–6.52 | 4.43–5.82 |