Comparison of the primary and secondary outcome measures for infants presenting during the lockdown and control periods
| Control (n=40) | Lockdown (n=47) | P value | |
| Preoperative PICU admissions | 2 (5)* | 2 (4.2)* | >0.99 |
| Median (IQR) | Median (IQR) | ||
| Age at admission (days) | 31 (24–41) | 34 (26–41) | 0.64 |
| Admission weight (g) | 3600 (3190–4083) | 3580 (3120–4085) | 0.84 |
| Preoperative admission to PICU, n (%) | 2 (5) | 2 (4.2) | 0.99 |
| Admission serum pH | 7.47 (7.43–7.51) | 7.47 (7.42–7.51) | 0.89 |
| Serum bicarbonate (mmol/L) | 33 (27.35–38.27) | 29.1 (25.3–34.0) | 0.15 |
| Serum chloride (mmol/L) | 97 (90.5–101.0) | 100 (94–108) | 0.08 |
| Serum potassium (mmol/L) | 4.16 (3.7–4.7) | 4.5 (4.1–5.0) | 0.04 |
| Standardised weight change—birth to admission, z score | −1.03 (−1.61 to −0.64) | −1.21 (−1.44 to −0.92) | 0.55 |
*% of those with complete data.
PICU, paediatric intensive care unit.