Table 1.
Demographic data among children who received postoperative oxygen therapy compared with those who did not
| Factor | No oxygen therapy (n = 1152) |
Oxygen therapy (n = 288) |
p value |
|---|---|---|---|
| Age (years) | 0.99 | ||
| <1 | 216 (18.8) | 54 (18.8) | |
| 1–6 | 552 (47.9) | 138 (47.9) | |
| >6 | 384 (33.3) | 96 (33.3) | |
| Male | 684 (59.4) | 182 (63.2) | 0.26 |
| Weight, median (IQR) (kg) | 16.0 (9.8-25.0) | 14.3 (8.4-33.4) | 0.41 |
| Height, median (IQR) (cm) | 104.0 (80-128.0) | 98.5 (75.0-130.0) | 0.19 |
| Body mass index (kg/m2) | <0.001* | ||
| 5–14.9 | 479 (41.6) | 130 (45.1) | |
| 15–24.9 | 629 (54.6) | 128 (44.4) | |
| 25-60 | 44 (3.8) | 30 (10.4) | |
| URI (Y/N) | 72 (6.2)/1080 (93.8) | 23 (8)/265 (92.0) | 0.35 |
| Pulmonary disease (Y/N) | 8 (0.7)/1144 (99.3) | 16 (5.6)/272 (94.4) | <0.001* |
| Hyper-reactive airway (Y/N) | 65 (5.6)/1087 (94.4) | 24 (8.3)/264 (91.7) | 0.12 |
| Anemia (Y/N) | 526 (45.7)/626 (54.3) | 127 (44.1)/161 (55.9) | 0.68 |
| Snoring (Y/N) | 14 (1.2)/1138 (98.8) | 4 (1.4)/284 (98.6) | 0.95 |
| Non-cyanotic heart (Y/N) | 41 (3.6)/1111 (96.4) | 30 (10.4)/258 (89.6) | <0.001* |
| Probable difficult airway (Y/N) | 12 (1.0)/1140 (99.0) | 21 (7.3)/267 (92.7) | <0.001* |
| Risk of aspiration (Y/N) | 24 (2.1)/1128 (97.9) | 11 (3.8)/277 (96.2) | 0.13 |
| Delayed development (Y/N) | 34 (3.0)/1118 (97.0) | 22 (7.6)/266 (92.4) | <0.001* |
Data are presented as frequency (percentage) unless otherwise stated
*<0.05 by chi-squared test
IQR inter-quartile range, URI Upper respiratory tract infection