Evidence map›Paper›PMID 27525254›Full record

ArticleCMAJ open

Patterns and trajectories of gestational weight gain: a prospective cohort study.

Megan Jarman, Yan Yuan, Mohammadreza Pakseresht, Qian Shi, Paula J Robson, Rhonda C Bell, Alberta Pregnancy Outcomes and Nutrition study team, ENRICH team

Abstract read
In one paragraph

Article in CMAJ open. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Megan JarmanDepartment of Agricultural, Food and Nutritional Science (Jarman, Pakseresht, Robson, Bell) and School of Public Health (Yuan, Shi), University of Alberta; Cancer Measurement, Outcomes, Research and Evaluation (C-MORE) (Robson), Cancer Control Alberta, Alberta Health Services, Edmonton, Alta.
Yan YuanDepartment of Agricultural, Food and Nutritional Science (Jarman, Pakseresht, Robson, Bell) and School of Public Health (Yuan, Shi), University of Alberta; Cancer Measurement, Outcomes, Research and Evaluation (C-MORE) (Robson), Cancer Control Alberta, Alberta Health Services, Edmonton, Alta.
Mohammadreza PaksereshtDepartment of Agricultural, Food and Nutritional Science (Jarman, Pakseresht, Robson, Bell) and School of Public Health (Yuan, Shi), University of Alberta; Cancer Measurement, Outcomes, Research and Evaluation (C-MORE) (Robson), Cancer Control Alberta, Alberta Health Services, Edmonton, Alta.
Qian ShiDepartment of Agricultural, Food and Nutritional Science (Jarman, Pakseresht, Robson, Bell) and School of Public Health (Yuan, Shi), University of Alberta; Cancer Measurement, Outcomes, Research and Evaluation (C-MORE) (Robson), Cancer Control Alberta, Alberta Health Services, Edmonton, Alta.
Paula J RobsonDepartment of Agricultural, Food and Nutritional Science (Jarman, Pakseresht, Robson, Bell) and School of Public Health (Yuan, Shi), University of Alberta; Cancer Measurement, Outcomes, Research and Evaluation (C-MORE) (Robson), Cancer Control Alberta, Alberta Health Services, Edmonton, Alta.
Rhonda C BellDepartment of Agricultural, Food and Nutritional Science (Jarman, Pakseresht, Robson, Bell) and School of Public Health (Yuan, Shi), University of Alberta; Cancer Measurement, Outcomes, Research and Evaluation (C-MORE) (Robson), Cancer Control Alberta, Alberta Health Services, Edmonton, Alta.
Alberta Pregnancy Outcomes and Nutrition study team
ENRICH team

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGestational weight gain in excess of or below Health Canada's guidelines is known to increase the risk of adverse outcomes for both the woman and her baby. This study describes patterns and trajectories of total and rate of gestational weight gain in a large prospective cohort of pregnant women and adolescents in the Alberta Pregnancy Outcomes and Nutrition study.

methodsWe collected weight and height data for 1541 pregnant adolescents and women (mean age 31 years, < 27 weeks' gestation) recruited through advertisements and physicians' offices in Calgary and Edmonton between May 2009 and November 2012. Data were collected once during each trimester following enrolment and once at about 3 months post partum. The participants were categorized according to their prepregnancy body mass index (BMI) as underweight, of normal weight, overweight or obese. We calculated distributions of total and weekly rates of weight gain and determined trajectories of weight gain for each prepregnancy BMI category.

resultsOf the 1541 participants, 761 (49.4%) exceeded Health Canada's guidelines for total gestational weight gain, and 272 (17.6%) gained less weight than recommended. A total of 63 (19.2%) and 38 (23.6%) participants categorized as overweight or obese, respectively, exceeded the recommended upper limit by 5 to less than 10 kg, and 53 (16.2%) and 27 (16.8%), respectively, exceeded the upper limit by at least 10 kg. Ninety-five participants (30.3%) in the overweight group and 59 (39.6%) of those in the obese group gained weight at more than double the recommended rate between the second and third trimesters. The median weight gain for participants in the normal, overweight and obese categories had exceeded recommended upper limits by about 30, 20 and 18 weeks' gestation, respectively.

interpretationAdherence to Health Canada's guidelines for gestational weight gain was low. Excess gestational weight gain was most marked among those with a prepregnancy BMI in the overweight or obese category. The findings suggest that weight management in pregnancy is challenging and complex. Messages and supports that are tailored for women in different prepregnancy BMI categories may help to improve guideline-concordant gestational weight gain.

Identifiers

PMID27525254
PMCPMC4966992

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.