- What is the PICO-S for this study?
Population: The population of the study is women with obesity or who are overweight at the beginning of pregnancy.
Intervention/Exposure: The women under study were exposed to antenatal or postpartum mental disorders.
Comparison: Normal weight women
Outcome: The findings of the study indicate that obese women had notably higher chances of having antenatal depression compared to normal-weight women in the control group same as the overweight women. Women with obesity also showed considerably higher chances of depression than overweight women, giving the evidence of a dose-response relationship. Based on high-quality studies, the median prevalence of high postpartum depression symptoms was between 13% for obese women and 9.9% for women with normal weight. It was established that there were higher chances of postpartum depression among obese and overweight women than among normal-weight women. It was established that obese and overweight women had significantly higher chances of postpartum depression than women with normal-weight. Moreover, obese women have a considerably higher odds of postpartum depression than overweight women. Evidence showed a high risk of other types of mental disorder among women with obesity such as anxiety, bipolar disorder, and binge eating. However, there were inadequate research to conclude about these diagnoses.
Study Design/ Setting: the design used in the article is systematic meta-analysis. It analyzed five databases including, EMBASE, MEDLINE, CINAHL, PsyINFO, and MIDRIS maternal.
- List the Inclusion and External criteria for this study.
Inclusion Criteria: studies were included in the meta-analysis if they evaluated antenatal (at any stage of pregnancy) or postpartum (within a year following delivery) mental disorder in overweight or obese women at the beginning of pregnancy.
Exclusion criteria: studies were excluded from the review if they could not obtain or extract data for obese and overweight women disjointedly from women with normal-weight.
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Part B: screening studies exercise
Part B assesses your understanding of study selection. You will need to use the studies in the Document Folder (Articles) to complete Part B.
- In Table below are 10 articles. For each article carry out a Title and Abstract Screening and Indicate whether it would be included or excluded from a full assessment based on this screening (i.e do not read the full text)
|Article||Include or exclude from full text assessment based on Tittle and Abstract screen?||Reason for Inclusion/exclusion|
|Example- Rando et al. (2004) Relationship between nutritional and psychological status of Pregnant adolescent and non-adolescents in Brazil||Include||Assesses ante-natal trait anxiety and appears to report data on weight changes over time and body mass index.|
|Sebire et al. (2001) Maternal obesity and pregnancy outcome: a study of 287,213 pregnancies in London||Include||The study examines maternal and foetal risks associated with being obesity during pregnancy|
|da Rocha &Kac (2012) High dietary ratio of omega-6 to omega-3 polyunsaturated acids during pregnancy and prevalence of post-partum depression.||Include||The article appears to report data on the association between post-partum depression and food that could lead to obesity or overweight in women.|
|Fowles et al. (2011) Eating at fast-food restaurants and dietary quality in low income pregnant women.||Exclude||The article does not include information on how fast food impact body weight and mental health of pregnant women.|
|Walker et al. (2006) Trajectory of weight changes in the first 6 weeks postpartum.||Include||Investigates postpartum weight change during the first 6 weeks and its correlation with psychological variables.|
|Kabir et al. (2008) Depression, Weight Gain, and Low Birth Weight Adolescent Delivery: Do Somatic Symptoms Strengthen Or Weaken the Relationship?||Exclude||The study lacks data on maternal body weight during pregnancy that could be the contributing factor of depression.|
|Gavin et al. (2009) Maternal depressive symptoms, depression, and psychiatric medication use in relation to risk of preterm delivery||Exclude||Although the article investigates maternal depression and the use of medication in pregnancy, it does not include data on body weight associated with maternal depression.|
|Brown & Avery (2012) Healthy weight management during pregnancy: What advice and information is being provided.||Exclude||The article does not investigate the relationship between overweight and obese and mental disorder|
|Sohail&Muazzam (2012) Correlates of disordered eating behavior among pregnant women.||Exclude||The article investigates factors impacting disordered eating, but it does not show it they are related to mental health and weight gain.|
|Scott (2012) Parenting quality and children’s mental health: biological mechanisms and psychological interventions||Exclude||It investigates how parenting affects children development and their mental health. It lacks data on maternal weight during pregnancy and how it affects mental health.|
|Freeman (2008) Perinatal Psychiatry: Risk Factors, Treatment Data, and Specific Challenges for Clinical Researchers||Exclude||The article asses how pregnancy affects psychology of women. However, it does not explore how it is associated with body weight.|
2. In Table 2 below are 5 articles. These articles were all excluded from the review based on a full text assessment. Read each article and give a brief explanation of the likely main reason(s) for exclusion. You can write this in note form, or bullet points. An example has been provided. Write your answers in the table. (20 marks)
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|Article||Reason for Exclusion based on full text assessment|
|Example – Li et al. (2012) Health-Related Quality of Life Among Pregnant Women With and Without Depression in Hubei, China||Does not report weight data/BMI at start of pregnancy – participants took part once at any point between 1st – 40th week of pregnancy and self-reported weight at time of participation only|
|Hollingsworth et al. (2012) The association between maltreatment in childhood and pre-pregnancy obesity in women attending an antenatal clinic in Australia.||It does not report on mental health data after pregnancy but on childhood mental history. There is no available data regarding other factors such as weight during childhood.|
|Gaysina et al. (2011) Symptoms of depression and anxiety, and change in body mass index from adolescence to adulthood: results from a British birth cohort.||The article does not consider data regarding the body mass index of pregnant women, but that of adolescents and adults from 15 to 53 years.|
|Walker et al. (2012) Ethnic-specific weight-loss interventions for low-income postpartum women: Findings and lessons.||It does not provide data on the correlation between weight loss and mental health of pregnant women.|
|Berg et al. (2011) Factors associated with binge eating disorder in pregnancy.||It does not include data on effects of binge eating disorder on maternal body weight and mental health of pregnant women.|
|Magriples (2009) The Effects of Obesity and Weight Gain in Young Women on Obstetric Outcomes||The study does not provide data on the outcome of mental health associated with obesity and excess weight gain in pregnancy.|
Part C: Meta-analysis statistics
Look at the forest plot in figure 3: pooled odds of postpartum depression in obese women compared with normal weight controls.
Answer the following questions:
- List the individual studies in figure 3 forest plot that report statistically significant odds ratios.
Ban 2012, Bombard 2012, Ertel 2012, Matihasevich 2010, Sandaram 2012, Uriquia 2012, Van Poppel 2012, Walker 2004
- What is the pooled effect estimate for the figure 3 forest plot? 1.30
Briefly summarize what this estimate tells you in the context of this review.
1.30 is the point estimate when all the individual studies are combined and averaged. The horizontal point of the plotted diamond indicates statistically significant ratio for the combined studies.
- Comment on the heterogeneity between results for the figure 3comparison. Consider how the authors addressed heterogeneity in the overall meta-analysis. The heterogeneity between the results is indicated by I2, which is 49.0%. Since 49% is less than 50% shows that the studies are consistent. Therefore, the conclusions drawn from the meta-analysis forest plan reliable.
Heterogeneity was addressed by the authors through ensuring that the data taken out from the reports is accurate, which sometimes it is not the case. The authors also conducted subgroup analysis or meta-regression
Brown, A., & Avery, A. (August 01, 2012). Healthy weight management during pregnancy: what advice and information is being provided: Healthy weight management during pregnancy. Journal of Human Nutrition and Dietetics, 25, 4, 378-387.
Da, R. C. M., & Kac, G. (January 01, 2012). High dietary ratio of omega-6 to omega-3 polyunsaturated acids during pregnancy and prevalence of post-partum depression. Maternal and Child Nutrition, 8, 1, 36-48.
Donofry, S. D., Germeroth, L. J., Kolko, C. R. P., Venditti, E. M., & Levine, M. D. (September 01, 2020). Correlates of Physical Activity Engagement among Pregnant Women with Overweight and Obesity. Women’s Health Issues, 30, 5, 393-400.
Fowles, E., Timmerman, G., Bryant, M., & Kim, S. H. (January 01, 2011). Eating at Fast-Food Restaurants and Dietary Quality in Low-Income Pregnant Women. Western Journal of Nursing Research, 33, 5, 630-651.
Freeman, M. P. (January 01, 2008). Perinatal psychiatry: Risk factors, treatment data, and specific challenges for clinical researchers. Journal of Clinical Psychiatry, 69, 4, 633-634.
Gavin, A. R., Holzman, C., Siefert, K., & Tian, Y. (September 01, 2009). Maternal Depressive Symptoms, Depression, and Psychiatric Medication Use in Relation to Risk of Preterm Delivery. Women’s Health Issues, 19, 5, 325-334.
Gaysina, D., Richards, M., Kuh, D., Hardy, R., Hotopf, M., & Colman, I. (January 01, 2011). Symptoms of depression and anxiety, and change in body mass index from adolescence to adulthood: Results from a British birth cohort. Psychological Medicine, 41, 1, 175-184.
Kabir, K., Sheeder, J., & Stevens-Simon, C. (January 01, 2008). Depression, Weight Gain, and Low Birth Weight Adolescent Delivery: Do Somatic Symptoms Strengthen Or Weaken the Relationship?. Journal of Pediatric and Adolescent Gynecology, 21, 6, 335-342.
Katharine Hollingsworth, Leonie Callaway, Michael Duhig, Sally Matheson, & James Scott. (January 01, 2012). The association between maltreatment in childhood and pre-pregnancy obesity in women attending an antenatal clinic in Australia. Plos One, 7, 12.)