Table 1.

Vaccination rates by birth-weight group in premature infants

	Total (N=198)		<1000g (N=41)		1000-1500g (N=157)		P**
	n	%	n	%	n	%
DPT-Hib-HepB* 1	198	100.0	41	100.0	157	100.0	-
DPT-Hib-HepB* 2	193	97.5	38	92.7	155	98.7	0.028
DPT-Hib-HepB* 3	185	93.4	33	80.5	152	96.8	<0.001
Oral Polio 1	198	100.0	41	100.0	157	100.0	-
Oral Polio 2	193	97.5	38	92.7	155	98.7	0.28
Oral Polio 3	185	93.4	33	80.5	152	96.8	<0.001
7-valent Pneumococcal 1	193	97.5	37	90.2	156	99.4	0.001
7-valent Pneumococcal 2	184	92.9	33	80.5	151	96.4	0.001
Monovalent Rotavirus 1	147	74.2	23	56.1	124	79.0	0.003
Monovalent Rotavirus 2	123	62.1	21	51.2	102	65.0	0.106

^*Diphtheria-pertussis-tetanus, Haemophilus influenza type b and Hepatitis B vaccine

^**For the comparison between birth weight groups