Growth and neurodevelopment in low birth weight versus normal birth weight infants from birth to 24 months, born in an obstetric emergency hospital in Haiti, a prospective cohort study

Table 3 Bayley Scales III mean and median raw scores for gross motor skills, fine motor skills, cognitive skills, receptive communication skills and expressive communication skills at follow-up visits corresponding to age corrected for gestational age

Bayley scale	Follow up visits corresponding to age (months)	NBW			LBW
Bayley scale	Follow up visits corresponding to age (months)	n	Mean (SD)	Median [IQR]	n	Mean (SD)	Median (IQR)
Gross Motor skills	6	179	26.5 (5.3)	27 [1, 38]	332	24.2 (5.6)	25 [0, 38]
	12	164	40 (6.6)	40 [4, 51]	312	38.6 (6.3)	39 [2, 52]
	18	143	50.2 (5.9)	52 [8, 57]	251	48 (7.3)	50 [3, 56]
	24	127	54.1 (6.3)	55 [5, 62]	218	53.4 (4.7)	55 [17, 61]
Fine motor skills	6	179	19.9 (3.7)	21 [5, 27]	312	12.9 (3.6)	14 [3, 19]
	12	164	28.8 (4)	30 [6, 34]	251	17.4 (5)	17 [5, 28]
	18	143	33.5 (4)	34 [7, 39]	218	24.2 (6.9)	25 [5, 39]
	24	127	36.9 (4.5)	37 [12, 44]	312	12.9 (3.6)	14 [3, 19]
Cognitive skills	12	164	39.6 (7.7)	41 [5, 56]	312	40.1 (7.3)	41 [3, 52]
	18	143	50.9 (8.2)	53 [10, 63]	251	48.9 (7.8)	51 [10, 61]
	24	127	56.9 (8.6)	59 [14, 69]	218	55.3 (7.6)	56.5 [23, 67]
Receptive communication skills	12	164	13.1 (2.2)	13 [6, 18]	312	12.8 (2.3)	13 [3, 17]
	18	143	18.5 (3.7)	19 [9, 26]	251	18.5 (3.7)	19 [6, 26]
	24	127	24.2 (4.4)	25 [6, 31]	218	23.4 (4.5)	25 [11, 39]
Expressive communication skills	12	164	12.7 (3.4)	13 [2, 19]	312	12.9 (3.6)	14 [3, 19]
	18	143	18.8 (4.9)	19 [4, 29]	251	17.4 (5)	17 [5, 28]
	24	127	25.5 (7)	26 [5, 39]	218	24.2 (6.9)	25 [5, 39]

ISSN: 1471-2431