Comparison of nostril sizes of newborn infants with outer diameter of endotracheal tubes

BMC Pediatrics

Table 2 Population demographics (n=99)

Characteristics	all (n=99)
Birth weight (g)	3057.5 (558.8)^a
Gestational age (weeks)	38.1 (2.2)^a
Length (cm)	49 (47-51)^b
Head circumference (cm)	34.5 (33.0-35.5)^b
Postnatal age during study (hours)	45.8 (13.6)^a
Male (%)	53 (54%)^c
Twins (%)	12 (12%)^c
Caesarean section (%)	43 (43%)^c
Caucasian (%)	90 (91%)^c

Data are shown as ^amean (SD), ^bmedian (IQR) or ^ccounts (percentages), SD standard deviation, IQR interquartile range

ISSN: 1471-2431