Subject characteristics and oxygen saturation
| Characteristics | n | Median (IQR) | Wilcoxon rank-sum test P value |
| Total participants | 266 | 95 (93–97) | |
| Asleep | 35 | 93 (91–96) | |
| Awake | 231 | 95 (93–97) | <0.0001 |
| Not in bilum | 211 | 95 (94–97) | |
| Inside bilum | 55 | 93 (92–95) | <0.0001 |
| Asleep in bilum | 24 | 92 (90.3–94.8) | |
| Awake in bilum | 31 | 93 (92–95) | 0.007 |
| Parent smokes | 115 | 95 (93–96) | |
| Parents non-smokers | 149 | 95 (93–97) | 0.049 |
| Hospital delivery | 177 | 95 (93–97) | |
| Home delivery | 86 | 95 (93–97) | 0.48 |
| Indwelling open fireplace in house | 172 | 95 (93–97) | |
| Separate fireplace outside house | 93 | 95 (93–97) | 0.83 |
| Artificial milk formula feeding | 27 | 95 (93–97) | |
| Breastmilk feeding | 237 | 95 (93–97) | 0.99 |
| Up to date/complete immunisation | 188 | 95 (93–97) | |
| Unimmunised/incomplete immunisation | 78 | 9 (93–97) | 0.87 |