It is very uncertain whether ampicillin plus gentamicin changes all‐cause mortality maximum compared with penicillin plus gentamicin (very low certainty).
It is very uncertain whether ampicillin plus gentamicin changes serious adverse events maximum compared with penicillin plus gentamicin (very low certainty).
It is very uncertain whether ampicillin plus gentamicin changes circulatory support maximum compared with penicillin plus gentamicin (very low certainty).
It is very uncertain whether ampicillin plus gentamicin changes neurological developmental impairment maximum compared with penicillin plus gentamicin (very low certainty).
It is very uncertain whether ampicillin plus gentamicin changes necrotising enterocolitis maximum compared with penicillin plus gentamicin (very low certainty).