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The breath hydrogen method was used in both studies.<jats:italic>Ascaris<\/jats:italic>-infected children showed a significantly poorer degree of lactose digestion following a test oral load than uninfected children. Recovery of the capacity of the children to digest lactose was still not fully complete for at least 3 weeks following anthelmintic treatment. On average, the mouth-to-caecum transit time was similar in infected and uninfected children, but among the<jats:italic>Ascaris<\/jats:italic>-infected children the transit time tended to be shorter in relation to the intensity of infection. Evidence from a cross-sectional survey indicated that ascariasis was significantly associated with reduced plasma vitamin A and carotenoid concentrations. This relationship remained after controlling for a range of socio-economic variables.<jats:italic>Ascaris<\/jats:italic>-infected children were frequently found to have lower haematocrits and blood haemoglobin concentrations than uninfected children, but these relationships could not be attributed to ascariasis alone.<\/jats:p>","DOI":"10.1017\/s0031182000058029","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T16:12:44Z","timestamp":1244218364000},"page":"603-613","source":"Crossref","is-referenced-by-count":54,"title":["Contributions of ascariasis to poor nutritional status in children from Chiriqui Province, Republic of Panama"],"prefix":"10.1017","volume":"95","author":[{"given":"D. L.","family":"Taren","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. C.","family":"Nesheim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D. W. 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