3,072 research outputs found
Maternal and familial correlates of anthropometric typologies in the nutrition transition of Colombia, 2000–2010
Q2Q1Objective: We aimed to assess the maternal and family determinants of four
anthropometric typologies at the household level in Colombia for the years 2000,
2005 and 2010.
Design: We classified children <5 years old according to height-for-age Z-score
(2) to assess stunting and overweight/obesity,
respectively; mothers were categorized according to BMI to assess underweight
(<18·5 kg/m2
) and overweight/obesity (≥25·0 kg/m2
). At the household level, we
established four final anthropometric typologies: normal, underweight, overweight and dual-burden households. Separate polytomous logistic regression
models for each of the surveyed years were developed to examine several
maternal and familial determinants of the different anthropometric typologies.
Setting: National and sub-regional (urban and rural) representative samples from
Colombia, South America.
Subjects: Drawing on data from three waves of Colombia’s Demographic and
Health Survey/Encuesta Nacional de Salud (DHS/ENDS), we examined individual
and household information from mothers (18–49 years) and their children (birth–
5 years).
Results: Higher parity was associated with an increased likelihood of overweight
and dual burden. Higher levels of maternal education were correlated with lower
prevalence of overweight, underweight and dual burden of malnutrition in all data
collection waves. In 2010, participation in nutrition programmes for children
<5 years, being an indigenous household, food purchase decisions by the mother
and food security classification were also associated with the four anthropometric
typologies.
Conclusions: Results suggest that maternal and family correlates of certain
anthropometric typologies at the household level may be used to better frame
policies aimed at improving social conditions and nutrition outcomes.Revista Internacional - Indexad
A survey for water maser emission towards planetary nebulae. New detection in IRAS 17347-3139
We report on a water maser survey towards a sample of 27 planetary nebulae
(PNe) using the Robledo de Chavela and Medicina single-dish antennas, as well
as the Very Large Array (VLA). Two detections have been obtained: the already
known water maser emission in K 3-35, and a new cluster of masers in IRAS
17347-3139. This low rate of detections is compatible with the short life-time
of water molecules in PNe (~100 yr). The water maser cluster at IRAS 17347-3139
are distributed on a ellipse of size ~ 0.2" x 0.1", spatially associated with
compact 1.3 cm continuum emission (simultaneously observed with the VLA). From
archive VLA continuum data at 4.9, 8.4, and 14.9 GHz, a spectral index alpha =
0.76 +- 0.03 is derived for this radio source, which is consistent with either
a partially optically thick ionized region or with an ionized wind. However,
the latter scenario can be ruled out on mass-loss considerations, thus
indicating that this source is probably a young PN. The spatial distribution
and the radial velocities of the water masers are suggestive of a rotating and
expanding maser ring, tracing the innermost regions of a torus formed at the
end of the AGB phase. Given that the 1.3 cm continuum emission peak is located
near one of the tips of the major axis of the ellipse of masers, we speculate
on a possible binary nature of IRAS 17347-3139, where the radio continuum
emission could belong to one of the components and the water masers would be
associated with a companion.Comment: Accepted by The Astrophysical Journal. 25 pages, 6 figure
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