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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Eur J Oral Sci. 2014 Sep 3;122(5):346–352. doi: 10.1111/eos.12147

Table 1.

Mutans streptococci (MS) at 8 and 18-20 months between very low birth weight (VLBW) and normal birth weight (NBW) infants

8 months
18-20 months
VLBW (n=204) NBW (n=182) P-value VLBW (n=194) NBW (n=184) P-value
Infant
Number of teeth 4.1±2.8 4.2±2.6 0.75 15.0±3.0 15.6±2.7 0.05*
MS Overall
 Absent 169(83.2%) 127(71.8%) 0.007* 116(59.8%) 94(51.1%) 0.09
 Present 34(16.8%) 50(28.2%) 78(40.2%) 90(48.9%)
MS Saliva
 Absent 179(88.2%) 139 (78.5%) 0.01* 134(69.1%) 119(64.7%) 0.36
 Present 24(11.8%) 38 (21.5%) 60(30.9%) 65(35.3%)
 0 179(88.2%) 139(78.5%) 0.007* 134(69.1%) 119(64.7%) 0.24
 1 23(11.3%) 28(15.8%) 30(15.4%) 41(22.3%)
 2 1(0.5%) 8(4.5%) 13(6.7%) 14(7.6%)
 3 0(0.0%) 2(1.2%) 17(8.8%) 10 (5.4%)
MS Plaque
 Absent 178(87.7%) 140(79.1%) 0.02* 123(63.4%) 101(54.9%) 0.09
 Present 25(12.3%) 37(20.9%) 71(36.6%) 83(45.1%)
 0 178(87.7%) 140(79.1%) 0.08 123(63.4%) 101(54.9%) 0.28
 1 22(10.8%) 28(15.8%) 32(16.5%) 44(23.9%)
 2 2(1.0%) 4(2.3%) 10(5.1%) 10(5.4%)
 3 1(0.5%) 5(2.8%) 29(15.0%) 29(15.8%)
Mother/Caregiver
MS Overall
 Low 51(25.2%) 48(27.1%) 0.68 40(20.7%) 52(28.4%) 0.08
 High 151(74.8%) 129(72.9%) 153(79.3%) 131(71.6%)
MS Saliva
 Low 61(30.2%) 63(35.6%) 0.26 54(28.0 %) 64(35.0%) 0.14
 High 141(69.8) 114(64.4%) 139(72.0%) 119(65.0%)
 0 31(15.4%) 29(16.4%) 0.67 29(15.0%) 32(17.5%) 0.42
 1 30(14.8%) 34(19.2%) 25(13.0%) 32(17.5%)
 2 65(32.2%) 52(29.4%) 51(26.4%) 49(26.8%)
 3 76(37.6%) 62(35.0%) 88(45.6%) 70(38.2%)
MS Plaque
 Low 78(38.6%) 70(39.6%) 0.85 72(37.3%) 76(41.5%) 0.40
 High 124(61.4%) 107(60.5%) 121(62.7%) 107(58.5%)
 0 42(20.8%) 45(25.4%) 0.51 34(17.6%) 44(24.0%) 0.43
 1 36(17.8%) 25(14.1%) 38(19.7%) 32(17.5%)
 2 42(20.8%) 31(17.5%) 30(15.5%) 23(12.6%)
 3 82(40.6%) 76(43.0%) 91(47.2%) 84 (45.9%)
*

Significantat p<0.05

Ordinal categories are Dentocult scores 0 to 3, dichotomous categories are absent (0) and present (1, 2, 3) for infant. For caregiver low (0,1) and high (2, 3)

Due to a few missing data, the table numbers may not add up to the totals for VLBW and NBW.