Associations between serum 25(OH)D concentrations and prevalent asthma among children living in communities with differing levels of urbanization: a cross-sectional study
Suzanne L. Pollard; John J. Lima; Karina Romero; Carla Tarazona-Meza; Edward Mougey; Katherine Tomaino; Gary Malpartida-Guzmán; Nadia N. Hansel · 2017 · Asthma Research and Practice
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract
Abstract Background Prior evidence suggests that vitamin D deficiency may increase the risk of asthma and atopy and impair pulmonary function in children. Methods In this cross-sectional analysis nested in a case-control study, we analyzed serum 25(OH)D concentrations in 413 children with asthma and 471 children without asthma living in two geographically adjacent study communities (Pampas and Villa El Salvador). We measured total and antigen-specific IgE levels, pulmonary function, asthma control, and exhaled nitric oxide. Results Mean 25(OH)D concentrations were 25.2 ng/mL (SD 10.1) in child
Abstract by Suzanne L. Pollard; John J. Lima; Karina Romero; Carla Tarazona-Meza; Edward Mougey; Katherine Tomaino; Gary Malpartida-Guzmán; Nadia N. Hansel, Asthma Research and Practice (2017) — licensed CC BY 4.0.
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Metadata source: DOAJ · DOI 10.1186/s40733-017-0033-2