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In IDHC none of the women who had HIV-positive children had received antiretroviral therapy during pregnancy.
The mean birth weight was similar in both centers, 2728g [+ or -] 581 g in NIID and 2656 g [+ or -] 504 g in IDHC. In eight out of 358 cases (2.2%) the birth weight was over 3800 g, all in full term pregnancies.
Although we found a higher proportion of children with low birth weight in the IDHC center than in the NIID center, 31.3% vs.
The rate of planned C sections was higher in the IDHC center (Pearson Chi-square=28.8, p<0.001), while more than one third of the women in the NIID center had vaginal delivery.
More than half of the women had not received treatment before pregnancy in NIID, while in IDHC more than one third had received at least 3 regimens before pregnancy (Table 2).
In the IDHC group more patients received antiretroviral drugs during pregnancy: 83.3% vs.
Efavirenz was not used during pregnancy in the IDHC group and was used in only 2 cases in the NIID group.
The prematurity rate was significantly higher among NIID patients in comparison with IDHC patients.
Words for both books were selected from a Spanish child language data base and from frequency lists of words comprehended in the preliminary norming study of the IDHC. Words were chosen to create pairs that belonged to similar semantic classes and had shown the same level of frequency of occurrence.
Several paradigms are part of the analyses: individual differences, effects of distinct experimental measures, relations between language and gestures, predictors of language development, differences between populations, validity and reliability of the measures, and development of norms for the IDHC. In this paper several issues are presented; complete answers will be available in the forthcoming publication of the results.
Correlations between measures may show whether parents report on language in a way similar to how they interact with their children in a "natural situation." The analyses will contrast the IDHC with natural language samples based on number of words, composition of the vocabulary, and mean length of utterance.
Results from the IDHC will be most helpful in attesting to this fact or refuting it.
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