Table 1.

Characteristics of infants included in the study.

	Entire Cohort (n = 78)	PRS (n = 34)	AWO (n = 44)	P
Sex (female/male), n (%)	43/35 (55.1%/43.9%)	21/13 (62%/38%)	22/22 (50%/50%)	.362
Median GA at birth, wk	39.5 [39–40]	40 [39–40]	39 [39–40]	.963
Median birth weight, g	3,160 [2,875–3,576]	3,192 [2,685–3,580]	3,160 [2,965–3,516]	.892
Median age at PSG, d	61 [45–89]	50.5 [41–68.5]	74 [56–92]	.017
Median weight at PSG, g	4,674 [4,082–5,373]	4,395 [3,840–4,720]	5,062 [4,357–5,662]	.001
Calorie-fortified nutrition, n (%)	13 (16.7%)	11 (32.4%)	2 (4.5%)	<.001
Feeding tube, n (%)	15 (19.2%)	13 (38.2%)	2 (4.5%)	<.001
Clinical respiratory characteristics, n (%)
At least 1 of the following OSA signs	73 (93.6%)	29 (85.3%)	44 (100%)	.013
Snoring	42 (53.8%)	20 (58.8%)	22 (50%)	.497
Apneas	36 (46.2%)	17 (50%)	19 (43.2%)	.648
Life-threatening event	16 (20.5%)	9 (26.5%)	7 (15.9%)	.273
Poor sleep quality perceived by parents	19 (24.4%)	9 (26.5%)	10 (22.7%)	.793
Stridor	41 (52.6%)	13 (38.2%)	28 (63.6%)	.039
Frequent desaturations if monitored before PSG	41 (52.6%)	17 (50%)	12 (27.3%)	.058
Respiratory effort	29 (37.2%)	14 (41.2%)	15 (34.1%)	.638
Respiratory treatments, n (%)
Prone positioning	27 (34.6%)	20 (58.8%)	7 (15.9%)	<.001
Lateral positioning	10 (12.8%)	6 (17.6%)	4 (9.1%)	.317
CPAP	23 (29.5%)	18 (52.9%)	5 (11.4%)	<.001
BPAP	3 (3.8%)	2 (5.9%)	1 (2.3%)	.577
Intubation	4 (5.1%)	3 (8.8%)	1 (2.3%)	.312
Surgery before PSG, n (%)
TNP	6 (7.7%)	6 (17.6%)	0 (0%)	.005
Glossoplexy	0 (0%)	0 (0%)	0 (0%)	1
Palate surgery	0 (0%)	0 (0%)	0 (0%)	1
Palatal plate	13 (16.7%)	13 (38.2%)	0 (0%)	<.001

Data are expressed as numbers and percentages or median and interquartile range. P values < .001 were considered statistically significant. AWO = isolated airway obstruction, BPAP = bilevel positive airway pressure, CPAP = continuous positive airway pressure, GA = gestational age, OSA = obstructive sleep apnea, PRS = Pierre Robin sequence, PSG = polysomnography, TNP = Nasopharyngeal Tube.