Table 2.

Subjects characteristics (Mean ± SD).

Group	Upright	p*	Control	p*	Sidelying
n	13		17		11
Gestational age (weeks)	29.4 ± 3.0#	0.892	29.3 ± 2.2	0.355	30.2 ± 2.7
Birth Weight (g)	1254 ± 408	0.767	1213 ± 312	0.036	1536 ± 398
DOL at Discharge	63 ± 27	0.883	62 ± 20	0.493	54 ± 34
PMA at Discharge	38.5 ± 1.9	0.617	38.2 ± 1.6	0.816	37.9 ± 2.9
Weight at Discharge (g)	2695 ± 360	0.658	2633 ± 401	0.970	2640 ±512

^*Independent t-test;

^#mean ± SD;

DOL-days of life;

PMA-postmentrual age (weeks).