Trial reportMaternal & child nutrition2011
The effect of tailor-made information on vitamin D status of immigrant mothers in Norway: a cluster randomized controlled trial.
Trial report in Maternal & child nutrition, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Refugee and Migrant Health Literacy Interventions in High-Income Countries: A Systematic Review.Journal of immigrant and minority health · 2022Pooled it
- Migration health research in Norway: a scoping review.Scandinavian journal of public health · 2023Article
- Positive impact on vitamin D related lifestyle of medical advice in pregnant Somali-born women and new mothers: a mixed method study in Swedish primary care.BMC public health · 2021Article
- Interventions to Support International Migrant Women's Reproductive Health in Western-Receiving Countries: A Systematic Review and Meta-Analysis.Health equity · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A high prevalence of vitamin D deficiency has been reported in non-Western immigrants in Norway. Our objective was to test whether written information about how to improve vitamin D status could improve the vitamin D status in immigrants mothers attending child health clinics. In this cluster randomized controlled trial in eight child health clinics in Oslo, mothers aged 18-43 years with Pakistani, Turkish, or Somali background were included when their infants were 6 weeks old. The public health nurses gave the intervention group a brochure with information on how to improve vitamin D status, written in their native language. They were compared with a control group receiving usual care, consisting of oral information only. The principal outcome measure was increase in serum 25-hydroxyvitamin D [s-25(OH) D] in mothers 7 weeks later. Forty-four mothers completed the study. Mean baseline s-25(OH) D was 29.1 (14.8) nmol l(-1) in the intervention and 19.4 (9.2) in the control group. There was no significant increase in s-25(OH) D from baseline to follow-up in the intervention [6.3 (95%CI: -1.9, 14.4) nmol l(-1) )] or in the control group [2.9 (95% CI [confidence interval]: -1.2, 7.0) nmol l(-1) ]. When adjusting for baseline s-25(OH) D concentration the mean difference in increase between the intervention and control group was 1.4 (95% CI: -18.7, 21.4) nmol l(-1) (P = 0.87). Adjustment for ethnicity, season and mother's educational background did not alter the results. In sum, providing immigrant mothers with written information about how to improve their vitamin D status did not have an effect on the mothers' vitamin D status.
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Registered trials
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