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| Outcome | n | Age (years) | Height (cm) | BMI (kg/m2) | |||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | ||
| Successful | 1022 | 8.44 | 1.57 | 131.8 | 11.2 | 17.5 | 3.2 |
| Refused | 38 | 7.05 ‡ | 1.57 | 124.1 ‡ | 9.0 | 16.0 ‡ | 2.6 |
| Technical failure | 424 | 7.85 ‡ | 1.67 | 130.6 * | 11.7 | 17.4 | 3.4 |
* Significant difference from successes (p<0.05)
‡ Significant difference from successes (p<0.001)
