Results in all infants
| NIRS (n=37) | Conventional (n=37) | p Value | |
|---|---|---|---|
| Results are given as median (interquartile range), or number (percentage). | |||
| NIRS, Near infrared spectroscopy—that is, group assessed using this technique; CLD, chronic lung disease. | |||
| Total number of transfusions | 56 | 84 | |
| Number of transfusions per infant | 1 (0–2) | 1 (0–3) | 0.64 |
| range 0–8 | range 0–14 | ||
| Number of donor exposures | 1 (0–2) | 1 (0–2) | 0.68 |
| Volume of blood per infant (ml) | 36 (0–71) | 37 (0–84) | 0.81 |
| Infants receiving no transfusions | 13 (35%) | 15 (41%) | 1.0 |
| Infants receiving 1 or less transfusions | 23 (62%) | 20 (54%) | 0.64 |
| Infants receiving 2 or less transfusions | 29 (78%) | 25 (68%) | 0.43 |
| Infants receiving 3 or less transfusions | 34 (92%) | 29 (78%) | 0.19 |
| Weight gain (g/week) | 126 (111–153) | 128 (113–144) | 0.99 |
| Length gain (mm/week) | 2.8 (2.5–3.2) | 3.2 (2.6–3.4) | 0.25 |
| Weight at discharge (g) | 2214 (1940–2788) | 2064 (1874–2360) | 0.19 |
| Postmenstrual age at discharge (weeks) | 37 (36–39) | 37 (36–39) | 0.72 |
| Length of stay (days) | 58 (35–84) | 49 (41–70) | 0.46 |
| Deaths | 2 (5%) | 2 (5%) | 1.0 |
| CLD at 36 weeks | 13 (35%) | 12 (32%) | 0.81 |
| Necrotising enterocolitis | 1 | 1 | 1 |
| Treated retinopathy | 0 | 0 | 1 |