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Xie L, Li J. Association of Perinatal Depressive Symptoms with Breastfeeding. ALPHA PSYCHIATRY 2024; 25:277-281. [PMID: 38798810 PMCID: PMC11117413 DOI: 10.5152/alphapsychiatry.2024.231308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 03/08/2024] [Indexed: 05/29/2024]
Abstract
Objective Perinatal depression (PND) refers to depressive symptoms that occur in women during pregnancy and/or postpartum and is a common perinatal mental health problem. It is unclear whether early breastfeeding behavior is associated with PND symptoms in China. Therefore, this study aimed to investigate the association between PND symptoms and breastfeeding patterns for infants based on a large cohort. Methods A prospective study was conducted in a community cohort from March 2021 to December 2022. In this study, maternal depressive symptoms were assessed using the Edinburgh postnatal depression scale (EPDS). The assessments were carried out 1 week before and 1 month after delivery. The socio-demographic information of the mothers, their intention to breastfeed, and their feeding status were investigated one-on-one by the hospital's trained medical staff through self-designed questionnaires. The maternity information and physical examination results were obtained through the healthcare records of the patients. Results A total of 442 pregnant women were included in the study, and the total detection rate of PND was 29.41%, among which the detection rate of mild PND was 24.66%, and the detection rate of severe depression was 4.75%. About 61.99% of the mothers had exclusive breastfeeding within 1 hour after delivery, and 83.71% had exclusive breastfeeding within 24 hours after delivery. The proportion of mothers with PND symptoms and those without PND symptoms who exclusively breastfed for the first time after delivery was 71.54% and 91.67%, respectively. The median duration of exclusive breastfeeding for mothers without depressive symptoms was 3(1,5) months, while the median duration of exclusive breastfeeding for mothers with depressive symptoms was 2(1,3) months, indicating that the duration of exclusive breastfeeding for mothers without depressive symptoms was longer (P < 0.05). Conclusion There was an association between perinatal depressive symptoms and exclusive breastfeeding. Addressing perinatal depressive symptoms may extend the duration of exclusive breastfeeding.
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Affiliation(s)
- Lijing Xie
- Department of Obstetrics, the Second People’s Hospital of Fuzhou Maternal and Child Health Hospital, Fuzhou, China
| | - Jumei Li
- Department of Obstetrics, the Second People’s Hospital of Fuzhou Maternal and Child Health Hospital, Fuzhou, China
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Fortin PM, Hopewell S, Estcourt LJ. Red blood cell transfusion to treat or prevent complications in sickle cell disease: an overview of Cochrane reviews. Cochrane Database Syst Rev 2018; 8:CD012082. [PMID: 30067867 PMCID: PMC6513377 DOI: 10.1002/14651858.cd012082.pub2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Globally, sickle cell disease (SCD) is one of the commonest severe monogenic disorders, due to the inheritance of two abnormal haemoglobin (beta globin) genes. SCD can cause severe pain, significant end-organ damage, pulmonary complications, and premature death. Red blood cell (RBC) transfusions are used to treat complications of SCD, e.g. acute chest syndrome (ACS) (this often involves a single transfusion episode), or they can be part of a regular long-term transfusion programme to prevent SCD complications. OBJECTIVES To summarize the evidence in Cochrane Reviews of the effectiveness and safety of RBC transfusions versus no transfusion, or restrictive (to increase the total haemoglobin) versus liberal (to decrease the haemoglobin S level below a specified percentage) transfusion, for treating or preventing complications experienced by people with SCD. METHODS We included Cochrane Reviews of randomised or quasi-randomised controlled trials published in the Cochrane Database of Systematic Reviews, that addressed various SCD complications and had RBC transfusion as an intervention or comparator. We assessed the methodological quality of included reviews according to the AMSTAR quality assessment. MAIN RESULTS We included 15 Cochrane Reviews, 10 of which had no included studies with an RBC transfusion intervention (five reported RCTs with other interventions; and five contained no studies). Five of the 15 reviews included participants randomised to RBC transfusion, but in one of these reviews only 10 participants were randomised with no usable data. Four reviews (nine trials with 1502 participants) reported data comparing short- or long-term RBC transfusions versus standard care, disease-modifying agents, a restrictive versus a liberal transfusion strategy and long-term RBC transfusions versus transfusions to treat complications. All reviews were of high quality according to AMSTAR quality assessment, however, the quality of the included trials was highly variable across outcomes. Trials were downgraded according to GRADE methodology for risk of bias, indirectness (most trials were conducted in children with HbSS), and imprecision (outcomes had wide confidence intervals).In all four reviews and all comparisons there was little or no difference in the risk of death (very low-quality evidence). There were either no deaths or death was a rare event.Short-term RBC transfusion versus standard care (one review: two trials, 434 participants, GRADE very low- to low-quality evidence)In people undergoing low- to medium-risk surgery, RBC transfusions may decrease the risk of acute chest syndrome (ACS) in people with African haplotypes compared to standard care (low-quality evidence), but there was little or no difference in people with the Arabic haplotype (very-low quality evidence). There was also little or no difference in the risk of other SCD-related or transfusion-related complications (very-low quality evidence).Long-term RBC transfusion versus standard care (two reviews: three trials, 405 participants, very low- to moderate-quality evidence)In children and adolescents at high risk of stroke (abnormal transcranial doppler (TCD) velocities or silent cerebral infarct (SCI)), long-term RBC transfusions probably decrease the risk of stroke (moderate-quality evidence) and may decrease the risk of ACS and painful crisis compared to standard care (low-quality evidence). Long-term RBC transfusions may also decrease the risk of SCI in children with abnormal TCD velocities (low-quality evidence), but there may be little or no difference in the risk of SCI in children with normal TCD velocities and previous SCI (low-quality evidence).In children and adolescents already receiving long-term RBC transfusions for preventing stroke, in comparison to standard care, continuing long-term RBC transfusions may reduce the risk of SCI (low-quality evidence) but we do not know whether there is a difference in the risk of stroke (very-low quality evidence). In children with normal TCD velocities and SCI there was little or no difference in the risk of alloimmunisation or transfusion reactions, but RBC transfusions may increase the risk of iron overload (low-quality evidence).Long-term RBC transfusion versus RBC transfusion to treat complications (one review: one trial, 72 participants, very low- to low-quality evidence)In pregnant women, long-term RBC transfusions may decrease the risk of painful crisis compared to transfusion for complications (low-quality evidence); but there may be little or no difference in the risk of other SCD-related complications or transfusion reactions (very-low quality evidence).RBC transfusion versus disease-modifying agents (hydroxyurea) (two reviews: two trials; 254 participants, very low- to low-quality evidence)For primary prevention of stroke in children, with abnormal TCD and no severe vasculopathy on magnetic resonance imaging/magnetic resonance angiography (MRI/MRA), who have received at least one year of RBC transfusions, we do not know whether there is a difference between RBC transfusion and disease-modifying agents in the risk of stroke; SCI; ACS; or painful crisis (very-low quality evidence). There may be little or no difference in the risk of iron overload (low-quality evidence).Similarly, for secondary prevention of stroke in children and adolescents, we do not know whether there is a difference between these interventions in the risk of stroke; SCI; or ACS (very-low quality evidence); but hydroxyurea with phlebotomy may increase the risk of painful crisis and global SCD serious adverse events compared to RBC transfusion (low-quality evidence). There may be little or no difference in the risk of iron overload (low-quality evidence).Restrictive versus liberal RBC transfusion strategy (one review: one trial; 230 participants, very low-quality evidence)In people undergoing cholecystectomy, there was little or no difference between strategies in the risk of SCD-related or transfusion-related complications (very-low quality evidence). AUTHORS' CONCLUSIONS This overview provides support from two high-quality Cochrane Reviews for the use of RBC transfusions in preventing stroke in children and adolescents at high risk of stroke (abnormal TCDs or SCI) and evidence that it may decrease the risk of SCI in children with abnormal TCD velocities. In addition RBC transfusions may reduce the risk of ACS and painful crisis in this population.This overview highlights the lack of high-quality evidence in adults with SCD and the number of reviews that have no evidence for the use of RBC transfusions across a spectrum of SCD complications. Also of concern is the variable and often incomplete reporting of patient-relevant outcomes in the included trials such as SCD-related serious adverse events and quality of life.
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Affiliation(s)
| | - Sally Hopewell
- University of OxfordNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS)Botnar Research Centre, Windmill RoadOxfordOxfordshireUKOX3 7LD
| | - Lise J Estcourt
- NHS Blood and TransplantHaematology/Transfusion MedicineLevel 2, John Radcliffe HospitalHeadingtonOxfordUKOX3 9BQ
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Clevenger B, Gurusamy K, Klein AA, Murphy GJ, Anker SD, Richards T. Systematic review and meta-analysis of iron therapy in anaemic adults without chronic kidney disease: updated and abridged Cochrane review. Eur J Heart Fail 2016; 18:774-85. [PMID: 27121474 DOI: 10.1002/ejhf.514] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/29/2015] [Accepted: 01/03/2016] [Indexed: 12/16/2022] Open
Abstract
AIMS Anaemia is increasingly recognized as having an independent impact upon patient outcomes in cardiac disease. The role of novel iron therapies to treat anaemia is increasing. This systematic review and meta-analysis assesses the efficacy and safety of iron therapies for the treatment of adults with anaemia. METHODS AND RESULTS Electronic databases and search engines were searched as per Cochrane methodology. Randomized controlled trials (RCTs) of iron vs. inactive control or placebo, as well as alternative formulations, doses, and routes in anaemic adults without chronic kidney disease or in the peri-partum period were eligible. The primary outcome of interest was mortality at 1 year. Secondary outcomes were blood transfusion, haemoglobin levels, quality of life, serious adverse events, and length of hospital stay. A total of 64 RCTs (including five studies of heart failure patients) comprising 9004 participants were included. None of the studies was at a low risk of bias. There were no statistically significant differences in mortality between iron and inactive control. Both oral and parenteral iron significantly reduced the proportion of patients requiring blood transfusion compared with inactive control [risk ratio (RR) 0.66, 95% confidence interval (CI) 0.48-0.90; and RR 0.84, 95% CI 0.73-0.97, respectively]. Haemoglobin was increased more by both oral and parenteral iron compared with inactive control [mean difference (MD) 0.91 g/dL, 95% CI 0.48 to 1.35; and MD 1.04, 95% CI 0.52 to 1.57, respectively], and parenteral iron demonstrated a greater increase when compared with oral iron (MD 0.53 g/dL, 95% CI 0.31-0.75). In all comparisons, there were no differences in the results comparing patients with and without heart failure. CONCLUSION Both oral and parenteral iron are shown to decrease the proportion of people who require blood transfusion and increase haemoglobin levels, without any benefit on mortality. Further trials at a low risk of bias, powered to measure clinically significant endpoints, are still required.
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Affiliation(s)
- Ben Clevenger
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Kurinchi Gurusamy
- Division of Surgery and Interventional Science, University College London, London, UK
| | - Andrew A Klein
- Department of Anaesthesia and Intensive Care, Papworth Hospital, Cambridge, UK
| | - Gavin J Murphy
- Department of Cardiovascular Sciences and NIHR Cardiovascular Biomedical Research Unit, University of Leicester, and Glenfield General Hospital, Leicester, UK
| | - Stefan D Anker
- Department of Innovative Clinical Trials, University Medical Centre Göttingen (UMG), Göttingen, Germany
| | - Toby Richards
- Division of Surgery and Interventional Science, University College London, London, UK
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Markova V, Norgaard A, Jørgensen KJ, Langhoff‐Roos J. Treatment for women with postpartum iron deficiency anaemia. Cochrane Database Syst Rev 2015; 2015:CD010861. [PMID: 26270434 PMCID: PMC8741208 DOI: 10.1002/14651858.cd010861.pub2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Postpartum iron deficiency anaemia is caused by bleeding or inadequate dietary iron intake/uptake. This condition is defined by iron deficiency accompanied by a lower than normal blood haemoglobin concentration, although this can be affected by factors other than anaemia and must be interpreted in the light of any concurrent symptoms. Symptoms include fatigue, breathlessness, and dizziness. Treatment options include oral or intravenous iron, erythropoietin which stimulates red blood cell production, and substitution by red blood cell transfusion. OBJECTIVES To assess the efficacy and harms of the available treatment modalities for women with postpartum iron deficiency anaemia. SEARCH METHODS The Cochrane Pregnancy and Childbirth Group's Trials Register (9 April 2015); the WHO International Clinical Trials Registry Portal (ICTRP), and the Latin-American and Caribbean Health Sciences Literature database (LILACS) (8 April 2015) and reference lists of retrieved studies. SELECTION CRITERIA We included published, unpublished and ongoing randomised controlled trials that compared a treatment for postpartum iron deficiency anaemia with placebo, no treatment, or another treatment for postpartum iron deficiency anaemia, including trials described in abstracts only. Cluster-randomised trials were eligible for inclusion. We included both open-label trials and blinded trials, regardless of who was blinded. The participants were women with a postpartum haemoglobin of 120 g per litre (g/L) or less, for which treatment was initiated within six weeks after childbirth.Non-randomised trials, quasi-randomised trials and trials using a cross-over design were excluded. DATA COLLECTION AND ANALYSIS Two review authors independently assessed studies for inclusion, quality, and extracted data. We contacted study authors and pharmaceutical companies for additional information. MAIN RESULTS We included 22 randomised controlled trials (2858 women), most of which had high risk of bias in several domains. We performed 13 comparisons. Many comparisons are based on a small number of studies with small sample sizes. No analysis of our primary outcomes contained more than two studies.Intravenous iron was compared to oral iron in 10 studies (1553 women). Fatigue was reported in two studies and improved significantly favouring the intravenously treated group in one of the studies. Other anaemia symptoms were not reported. One woman died from cardiomyopathy (risk ratio (RR) 2.95; 95% confidence interval (CI) 0.12 to 71.96; two studies; one event; 374 women; low quality evidence). One woman developed arrhythmia. Both cardiac complications occurred in the intravenously treated group. Allergic reactions occurred in three women treated with intravenous iron, not statistically significant (average RR 2.78; 95% CI 0.31 to 24.92; eight studies; 1454 women; I² = 0%; low quality evidence). Gastrointestinal events were less frequent in the intravenously treated group (average RR 0.31; 95% CI 0.20 to 0.47; eight studies; 169 events; 1307 women; I² = 0%; very low quality evidence).One study evaluated red blood cell transfusion versus non-intervention. General fatigue improved significantly more in the transfusion group at three days (MD -0.80; 95% CI -1.53 to -0.07; women 388; low quality evidence), but no difference between groups was seen at six weeks. Maternal mortality was not reported.The remaining comparisons evaluated oral iron (with or without other food substances) versus placebo (three studies), intravenous iron with oral iron versus oral iron (two studies) and erythropoietin (alone or combined with iron) versus placebo or iron (seven studies). These studies did not investigate fatigue. Maternal mortality was rarely reported. AUTHORS' CONCLUSIONS The body of evidence did not allow us to reach a clear conclusion regarding the efficacy of the interventions on postpartum iron deficiency anaemia. The quality of evidence was low.Clinical outcomes were rarely reported. Laboratory values may not be reliable indicators for efficacy, as they do not always correlate with clinical treatment effects. It remains unclear which treatment modality is most effective in alleviating symptoms of postpartum anaemia.Intravenous iron was superior regarding gastrointestinal harms, however anaphylaxis and cardiac events occurred and more data are needed to establish whether this was caused by intravenous iron.The clinical significance of some temporarily improved fatigue scores in women treated with blood transfusion is uncertain and this modest effect should be balanced against known risks, e.g. maternal mortality (not reported) and maternal immunological sensitisation, which can potentially harm future pregnancies.When comparing oral iron to placebo it remains unknown whether efficacy (relief of anaemia symptoms) outweighs the documented gastrointestinal harms.We could not draw conclusions regarding erythropoietin treatment due to lack of evidence.Further research should evaluate treatment effect through clinical outcomes, i.e. presence and severity of anaemia symptoms balanced against harms, i.e. survival and severe morbidity.
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Affiliation(s)
- Veronika Markova
- University of CopenhagenDepartment of ObstetricsBlegdamsvej 9CopenhagenDenmark2100
| | - Astrid Norgaard
- Rigshospitalet, Copenhagen UniversitySection for Transfusion Medicine, Capital Region BloodbankBlegdamsvej 9CopenhagenDenmarkDK 2100
| | | | - Jens Langhoff‐Roos
- Rigshospitalet, Copenhagen UniversityDepartment of ObstetricsBlegdamsvej 9CopenhagenDenmarkDK 2100
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Holm C, Thomsen LL, Norgaard A, Langhoff-Roos J. Intravenous iron isomaltoside 1000 administered by high single-dose infusions or standard medical care for the treatment of fatigue in women after postpartum haemorrhage: study protocol for a randomised controlled trial. Trials 2015; 16:5. [PMID: 25588587 PMCID: PMC4326197 DOI: 10.1186/1745-6215-16-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 12/10/2014] [Indexed: 11/24/2022] Open
Abstract
Background Postpartum haemorrhage can lead to iron deficiency with and without anaemia, the clinical consequences of which include physical fatigue. Although oral iron is the standard treatment, it is often associated with gastrointestinal side effects and poor compliance. To date, no published randomised controlled studies have compared the clinical efficacy and safety of standard medical care with intravenous administration of iron supplementation after postpartum haemorrhage. The primary objective of this study is to compare the efficacy of an intravenous high single-dose of iron isomaltoside 1000 with standard medical care on physical fatigue in women with postpartum haemorrhage. Methods/Design In a single centre, open-labelled, randomised trial, women with postpartum haemorrhage exceeding 700 mL will be allocated to either a single dose of 1,200 mg of iron isomaltoside 1000 or standard medical care. Healthy parturients with a singleton pregnancy will be included within 48 hours after delivery. Participants will complete structured questionnaires that focus on several dimensions of fatigue and mental health (Multidimensional Fatigue Inventory, Edinburgh Postnatal Depression Scale and the Postpartum Questionnaire), at inclusion and at follow-up visits after three days, one week, three weeks, eight weeks, and 12 weeks postpartum. The primary endpoint is the aggregated change in physical fatigue score within 12 weeks postpartum, as measured by a subscale of the Multidimensional Fatigue Inventory. The primary objective will be considered to have been met if an intravenous high single dose of iron isomaltoside 1000 is shown to be superior to standard medical care in women after postpartum haemorrhage regarding physical fatigue. For claiming superiority, we set the minimal clinically relevant difference between the mean scores at 1.8, and the assumed standard deviation at 4.2. Hence, 87 participants per treatment group are needed in order to demonstrate superiority; to provide an extra margin for missing data and dropouts, 200 women will be included. Discussion The study will provide evidence on relevant clinical outcomes beyond biochemical parameters for intravenous iron isomaltoside 1000 compared to standard medical care in women after postpartum haemorrhage. Trial registration This trial is registered with Clinicaltrials.gov (identifier: NCT01895218) on 26 June 2013. Electronic supplementary material The online version of this article (doi:10.1186/1745-6215-16-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Charlotte Holm
- Department of Obstetrics, Juliane Marie Centre, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, DK-2100 Kbh Ø Copenhagen, Denmark.
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Gurusamy KS, Nagendran M, Broadhurst JF, Anker SD, Richards T. Iron therapy in anaemic adults without chronic kidney disease. Cochrane Database Syst Rev 2014; 2014:CD010640. [PMID: 25550190 PMCID: PMC10891481 DOI: 10.1002/14651858.cd010640.pub2] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Anaemia affects about a quarter of the world's population. An estimated 50% of anaemic people have anaemia due to iron deficiency. OBJECTIVES To assess the safety and efficacy of iron therapies for the treatment of adults with anaemia who are not pregnant or lactating and do not have chronic kidney disease. SEARCH METHODS We ran the search on 11 July 2013. We searched the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, EMBASE (Ovid SP), the Cumulative Index to Nursing and Allied Health Literature (CINAHL) Plus (EBSCO Host), the Institute for Scientific Information Web of Science (ISI WOS) Scientific Citation Index (SCI)-EXPANDED (1970) and Conference Proceedings Citation Index (CPCI)-Science (1990) and Clinicaltrials.gov; we also screened reference lists. An updated search was run on 24 November 2014 but the results have not yet been incorporated into the review. SELECTION CRITERIA Two review authors independently selected references for further assessment by going through all titles and abstracts. Further selection was based on review of full-text articles for selected references. DATA COLLECTION AND ANALYSIS Two review authors independently extracted study data. We calculated the risk ratio (RR) with 95% confidence interval (CI) for binary outcomes and the mean difference (MD) or the standardised mean difference (SMD) with 95% CI for continuous outcomes. We performed meta-analysis when possible, when I(2) was less than or equal to 80% using a fixed-effect or random-effects model, using Review Manager software. The range of point estimates for individual studies is presented when I(2) > 80%. MAIN RESULTS We included in this systematic review 4745 participants who were randomly assigned in 21 trials. Trials were conducted in a wide variety of clinical settings. Most trials included participants with mild to moderate anaemia and excluded participants who were allergic to iron therapy. All trials were at high risk of bias for one or more domains. We compared both oral iron and parenteral iron versus inactive controls and compared different iron preparations.The comparison between oral iron and inactive control revealed no evidence of clinical benefit in terms of mortality (RR 1.05, 95% CI 0.68 to 1.61; four studies, N = 659; very low-quality evidence). The point estimate of the mean difference in haemoglobin levels in individual studies ranged from 0.3 to 3.1 g/dL higher in the oral iron group than in the inactive control group. The proportion of participants who required blood transfusion was lower with oral iron than with inactive control (RR 0.74, 95% CI 0.55 to 0.99; three studies, N = 546; very low-quality evidence). Evidence was inadequate for determination of the effect of parenteral iron on mortality versus oral iron (RR 1.49, 95% CI 0.56 to 3.94; 10 studies, N = 2141; very low-quality evidence) or inactive control (RR 1.04, 95% CI 0.63 to 1.69; six studies, N = 1009; very low-quality evidence). Haemoglobin levels were higher with parenteral iron than with oral iron (MD -0.50 g/dL, 95% CI -0.73 to -0.27; six studies, N = 769; very low-quality evidence). The point estimate of the mean difference in haemoglobin levels in individual studies ranged between 0.3 and 3.0 g/dL higher in the parenteral iron group than in the inactive control group. Differences in the proportion of participants requiring blood transfusion between parenteral iron and oral iron groups (RR 0.61, 95% CI 0.24 to 1.58; two studies, N = 371; very low-quality evidence) or between parenteral iron groups and inactive controls (RR 0.84, 95% CI 0.66 to 1.06; eight studies, N = 1315; very low-quality evidence) were imprecise. Average blood volume transfused was less in the parenteral iron group than in the oral iron group (MD -0.54 units, 95% CI -0.96 to -0.12; very low-quality evidence) based on one study involving 44 people. Differences between therapies in quality of life or in the proportion of participants with serious adverse events were imprecise (very low-quality evidence). No trials reported severe allergic reactions due to parenteral iron, suggesting that these are rare. Adverse effects related to oral iron treatment included nausea, diarrhoea and constipation; most were mild.Comparisons of one iron preparation over another for mortality, haemoglobin or serious adverse events were imprecise. No information was available on quality of life. Thus, little evidence was found to support the use of one preparation or regimen over another.Subgroup analyses did not reveal consistent results; therefore we were unable to determine whether iron is useful in specific clinical situations, or whether iron therapy might be useful for people who are receiving erythropoietin. AUTHORS' CONCLUSIONS • Very low-quality evidence suggests that oral iron might decrease the proportion of people who require blood transfusion, and no evidence indicates that it decreases mortality. Oral iron might be useful in adults who can tolerate the adverse events, which are usually mild.• Very low-quality evidence suggests that intravenous iron results in a modest increase in haemoglobin levels compared with oral iron or inactive control without clinical benefit.• No evidence can be found to show any advantage of one iron preparation or regimen over another.• Additional randomised controlled trials with low risk of bias and powered to measure clinically useful outcomes such as mortality, quality of life and blood transfusion requirements are needed.
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Affiliation(s)
- Kurinchi Selvan Gurusamy
- Royal Free Campus, UCL Medical SchoolDepartment of SurgeryRoyal Free HospitalRowland Hill StreetLondonUKNW3 2PF
| | - Myura Nagendran
- Department of SurgeryUCL Division of Surgery and Interventional Science9th Floor, Royal Free HospitalPond StreetLondonUKNW3 2QG
| | - Jack F Broadhurst
- University College LondonDivision of MedicineGower StreetLondonGreater LondonUKWC1E 6BT
| | - Stefan D Anker
- University Medical Centre GöttingenInnovative Clinical TrialsGöttingenGermany
| | - Toby Richards
- Royal Free Campus, UCL Medical SchoolDepartment of SurgeryRoyal Free HospitalRowland Hill StreetLondonUKNW3 2PF
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Ahmed A, Ahmad A, Khalid N, David A, Sandhu MA, Randhawa MA, Suleria HAR. A question mark on iron deficiency in 185 million people of Pakistan: its outcomes and prevention. Crit Rev Food Sci Nutr 2014; 54:1617-35. [PMID: 24580562 DOI: 10.1080/10408398.2011.645087] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Micronutrient deficiency especially the iron deficiency is the bane of our lives, affecting all strata of society. Unfortunately, the women during pregnancy, adolescence, and children are under this curse particularly in developing countries like Pakistan. It is one of the biggest reasons of complications during pregnancy and malnourished children under five years of age. Maternal death, still-births, and underweight births are most common consequences of iron deficiency and these outbreaks as iron-deficiency anemia in Pakistan. Disastrous nature of iron deficiency requires an urgent call to eradicate it. Hence, the solution should not be frail comparing with the huge economic loss and other incompatibilities. Flour fortification, supplementation, dietary diversification, and especially maternal education are possible solutions for combating this micronutrient deficiency.
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Affiliation(s)
- Anwaar Ahmed
- a Department of Food Technology , PMAS Arid Agriculture University , Rawalpindi , 36400 , Pakistan
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Renfrew MJ, McFadden A, Bastos MH, Campbell J, Channon AA, Cheung NF, Silva DRAD, Downe S, Kennedy HP, Malata A, McCormick F, Wick L, Declercq E. Midwifery and quality care: findings from a new evidence-informed framework for maternal and newborn care. Lancet 2014; 384:1129-45. [PMID: 24965816 DOI: 10.1016/s0140-6736(14)60789-3] [Citation(s) in RCA: 747] [Impact Index Per Article: 74.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In this first paper in a series of four papers on midwifery, we aimed to examine, comprehensively and systematically, the contribution midwifery can make to the quality of care of women and infants globally, and the role of midwives and others in providing midwifery care. Drawing on international definitions and current practice, we mapped the scope of midwifery. We then developed a framework for quality maternal and newborn care using a mixed-methods approach including synthesis of findings from systematic reviews of women's views and experiences, effective practices, and maternal and newborn care providers. The framework differentiates between what care is provided and how and by whom it is provided, and describes the care and services that childbearing women and newborn infants need in all settings. We identified more than 50 short-term, medium-term, and long-term outcomes that could be improved by care within the scope of midwifery; reduced maternal and neonatal mortality and morbidity, reduced stillbirth and preterm birth, decreased number of unnecessary interventions, and improved psychosocial and public health outcomes. Midwifery was associated with more efficient use of resources and improved outcomes when provided by midwives who were educated, trained, licensed, and regulated. Our findings support a system-level shift from maternal and newborn care focused on identification and treatment of pathology for the minority to skilled care for all. This change includes preventive and supportive care that works to strengthen women's capabilities in the context of respectful relationships, is tailored to their needs, focuses on promotion of normal reproductive processes, and in which first-line management of complications and accessible emergency treatment are provided when needed. Midwifery is pivotal to this approach, which requires effective interdisciplinary teamwork and integration across facility and community settings. Future planning for maternal and newborn care systems can benefit from using the quality framework in planning workforce development and resource allocation.
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Affiliation(s)
- Mary J Renfrew
- Mother and Infant Research Unit, School of Nursing and Midwifery, College of Medicine, Dentistry and Nursing, University of Dundee, Dundee, UK.
| | - Alison McFadden
- Mother and Infant Research Unit, School of Nursing and Midwifery, College of Medicine, Dentistry and Nursing, University of Dundee, Dundee, UK
| | | | - James Campbell
- Instituto de Cooperación Social Integrare, Barcelona, Spain
| | - Andrew Amos Channon
- Division of Social Statistics and Demography, Faculty of Social and Human Sciences, University of Southampton, Southampton, UK
| | - Ngai Fen Cheung
- Midwifery Expert Committee of the Maternal and Child Health Association of China, Beijing, China
| | | | - Soo Downe
- School of Health, University of Central Lancashire, Preston, Lancashire, UK
| | | | - Address Malata
- Kamuzu College of Nursing University of Malawi, Lilongwe, Malawi
| | - Felicia McCormick
- Department of Health Sciences, University of York, Heslington West, York, UK
| | - Laura Wick
- Institute of Community and Public Health, Birzeit University, Birzeit, Palestine
| | - Eugene Declercq
- Community Health Sciences, Boston University School of Public Health, Boston, MD, USA
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Salam RA, Mansoor T, Mallick D, Lassi ZS, Das JK, Bhutta ZA. Essential childbirth and postnatal interventions for improved maternal and neonatal health. Reprod Health 2014; 11 Suppl 1:S3. [PMID: 25177795 PMCID: PMC4145857 DOI: 10.1186/1742-4755-11-s1-s3] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Childbirth and the postnatal period, spanning from right after birth to the following several weeks, presents a time in which the number of deaths reported still remain alarmingly high. Worldwide, about 800 women die from pregnancy- or childbirth-related complications daily while almost 75% of neonatal deaths occur within the first seven days of delivery and a vast majority of these occur in the first 24 hours. Unfortunately, this alarming trend of mortality persists, as 287,000 women lost their lives to pregnancy and childbirth related causes in 2010. Almost all of these deaths were preventable and occurred in low-resource settings, pointing towards dearth of adequate facilities in these parts of the world. The main objective of this paper is to review the evidence based childbirth and post natal interventions which have a beneficial impact on maternal and newborn outcomes. It is a compilation of existing, new and updated interventions designed to help physicians and policy makers and enable them to reduce the burden of maternal and neonatal morbidities and mortalities. Interventions during the post natal period that were found to be associated with a decrease in maternal and neonatal morbidity and mortality included: advice and support of family planning, support and promotion of early initiation and continued breastfeeding; thermal care or kangaroo mother care for preterm and/or low birth weight babies; hygienic care of umbilical cord and skin following delivery, training health personnel in basic neonatal resuscitation; and postnatal visits. Adequate delivery of these interventions is likely to bring an unprecedented decrease in the number of deaths reported during childbirth.
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Affiliation(s)
- Rehana A Salam
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Tarab Mansoor
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Dania Mallick
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Zohra S Lassi
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Jai K Das
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Zulfiqar A Bhutta
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
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Lassi ZS, Kumar R, Mansoor T, Salam RA, Das JK, Bhutta ZA. Essential interventions: implementation strategies and proposed packages of care. Reprod Health 2014; 11 Suppl 1:S5. [PMID: 25178110 PMCID: PMC4145859 DOI: 10.1186/1742-4755-11-s1-s5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
In an effort to accelerate progress towards achieving Millennium Development Goal (MDG) 4 and 5, provision of essential reproductive, maternal, newborn and child health (RMNCH) interventions is being considered. Not only should a state-of-the-art approach be taken for services delivered to the mother, neonate and to the child, but services must also be deployed across the household to hospital continuum of care approach and in the form of packages. The paper proposed several packages for improved maternal, newborn and child health that can be delivered across RMNCH continuum of care. These packages include: supportive care package for women to promote awareness related to healthy pre-pregnancy and pregnancy interventions; nutritional support package for mother to improve supplementation of essential nutrients and micronutrients; antenatal care package to detect, treat and manage infectious and noninfectious diseases and promote immunization; high risk care package to manage preeclampsia and eclampsia in pregnancy; childbirth package to promote support during labor and importance of skilled birth attendance during labor; essential newborn care package to support healthy newborn care practices; and child health care package to prevent and manage infections. This paper further discussed the implementation strategies for employing these interventions at scale.
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Affiliation(s)
- Zohra S Lassi
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Rohail Kumar
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Tarab Mansoor
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Rehana A Salam
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Jai K Das
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
| | - Zulfiqar A Bhutta
- Division of Women and Child Health, Aga Khan University, Karachi, Pakistan
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11
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Iron therapy in anaemic adults without chronic kidney disease. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2013. [DOI: 10.1002/14651858.cd010640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Parker JA, Barroso F, Stanworth SJ, Spiby H, Hopewell S, Doree CJ, Renfrew MJ, Allard S. Gaps in the evidence for prevention and treatment of maternal anaemia: a review of systematic reviews. BMC Pregnancy Childbirth 2012; 12:56. [PMID: 22727258 PMCID: PMC3475131 DOI: 10.1186/1471-2393-12-56] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Accepted: 06/01/2012] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Anaemia, in particular due to iron deficiency, is common in pregnancy with associated negative outcomes for mother and infant. However, there is evidence of significant variation in management. The objectives of this review of systematic reviews were to analyse and summarise the evidence base, identify gaps in the evidence and develop a research agenda for this important component of maternity care. METHODS Multiple databases were searched, including MEDLINE, EMBASE and The Cochrane Library. All systematic reviews relating to interventions to prevent and treat anaemia in the antenatal and postnatal period were eligible. Two reviewers independently assessed data inclusion, extraction and quality of methodology. RESULTS 27 reviews were included, all reporting on the prevention and treatment of anaemia in the antenatal (n = 24) and postnatal periods (n = 3). Using AMSTAR as the assessment tool for methodological quality, only 12 of the 27 were rated as high quality reviews. The greatest number of reviews covered antenatal nutritional supplementation for the prevention of anaemia (n = 19). Iron supplementation was the most extensively researched, but with ongoing uncertainty about optimal dose and regimen. Few identified reviews addressed anaemia management post-partum or correlations between laboratory and clinical outcomes, and no reviews reported on clinical symptoms of anaemia. CONCLUSIONS The review highlights evidence gaps including the management of anaemia in the postnatal period, screening for anaemia, and optimal interventions for treatment. Research priorities include developing standardised approaches to reporting of laboratory outcomes, and information on clinical outcomes relevant to the experiences of pregnant women.
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Affiliation(s)
- Jacqui A Parker
- Department of Obstetric Anaesthesia, John Radcliffe Hospital, Headley Way, Headington, Oxford OX3 9BQ, UK
| | - Filipa Barroso
- Department of Haematology, Barts and London Hospitals NHS Trust & NHS Blood & Transplant, London, UK
| | - Simon J Stanworth
- Department of Haematology, John Radcliffe Hospital, NHS Blood & Transplant/Oxford Radcliffe Hospitals Trust, University of Oxford, Oxford, UK
| | - Helen Spiby
- School of Nursing, Midwifery and Physiotherapy, University of Nottingham, Nottingham, UK
| | - Sally Hopewell
- Systematic Review Initiative, NHS Blood & Transplant, John Radcliffe Hospital, Oxford, UK
| | - Carolyn J Doree
- Systematic Review Initiative, NHS Blood & Transplant, John Radcliffe Hospital, Oxford, UK
| | - Mary J Renfrew
- Mother and Infant Research Unit, Dept of Health Sciences, University of York, York, UK
| | - Shubha Allard
- Department of Haematology, Barts and London Hospitals NHS Trust & NHS Blood & Transplant, London, UK
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13
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Effects of preventive oral supplementation with iron or iron with folic acid for women following childbirth. Cochrane Database Syst Rev 2012. [DOI: 10.1002/14651858.cd009842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Pasricha SRS, De-Regil LM. Daily iron supplementation for improving iron status and health among menstruating women. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2012. [DOI: 10.1002/14651858.cd009747] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Whennan LD, Grzeskowiak LE. Impact of Pharmaceutical Reforms on Non-Prescription Medication Management in Post-Natal Women Following Discharge from Hospital. JOURNAL OF PHARMACY PRACTICE AND RESEARCH 2012. [DOI: 10.1002/j.2055-2335.2012.tb00125.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Luke E Grzeskowiak
- Quality Use of Medicines and Pharmacy Research Centre, Sansom Institute for Health Research, School of Pharmacy and Medical Sciences; University of South Australia; Adelaide South Australia
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Postpartum anemia II: prevention and treatment. Ann Hematol 2011; 91:143-54. [DOI: 10.1007/s00277-011-1381-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 11/25/2011] [Indexed: 11/25/2022]
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Beucher G, Grossetti E, Simonet T, Leporrier M, Dreyfus M. Anémie par carence martiale et grossesse. Prévention et traitement. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.sagf.2011.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Beucher G, Grossetti E, Simonet T, Leporrier M, Dreyfus M. [Iron deficiency anemia and pregnancy. Prevention and treatment]. ACTA ACUST UNITED AC 2011; 40:185-200. [PMID: 21333465 DOI: 10.1016/j.jgyn.2011.01.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 01/06/2011] [Accepted: 01/11/2011] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To assess the effectiveness and the safety of prevention and treatment of iron deficiency anemia during pregnancy. METHODS French and English publications were searched using PubMed and Cochrane library. RESULTS Early screening of iron deficiency by systematic examination and blood analysis seemed essential. Maternal and perinatal complications were correlated to the severity and to the mode of appearance of anemia. Systematic intakes of iron supplements seemed not to be recommended. In case of anemia during pregnancy, iron supplementation was not associated with a significant reduction in substantive maternal and neonatal outcomes. Oral iron supplementation increased blood parameters but exposed to digestive side effects. Women who received parenteral supplementation were more likely to have better hematological response but also severe potential side effects during pregnancy and in post-partum. The maternal tolerance of anemia motivated the choice between parenteral supplementation and blood transfusion. CONCLUSION Large and methodologically strong trials are necessary to evaluate the effects of iron supplementation on maternal health and pregnancy outcomes.
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Affiliation(s)
- G Beucher
- Service de gynécologie obstétrique et médecine de la reproduction, CHU de Caen, avenue Côte-de-Nacre, Caen cedex 9, France.
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Turner TJ, Barnes H, Reid J, Garrubba M. Evidence for perinatal and child health care guidelines in crisis settings: can Cochrane help? BMC Public Health 2010; 10:170. [PMID: 20350326 PMCID: PMC3091544 DOI: 10.1186/1471-2458-10-170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Accepted: 03/29/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND It is important that healthcare provided in crisis settings is based on the best available research evidence. We reviewed guidelines for child and perinatal health care in crisis situations to determine whether they were based on research evidence, whether Cochrane systematic reviews were available in the clinical areas addressed by these guidelines and whether summaries of these reviews were provided in Evidence Aid. METHODS Broad internet searches were undertaken to identify relevant guidelines. Guidelines were appraised using AGREE and the clinical areas that were relevant to perinatal or child health were extracted. We searched The Cochrane Database of Systematic Reviews to identify potentially relevant reviews. For each review we determined how many trials were included, and how many were conducted in resource-limited settings. RESULTS Six guidelines met selection criteria. None of the included guidelines were clearly based on research evidence. 198 Cochrane reviews were potentially relevant to the guidelines. These reviews predominantly addressed nutrient supplementation, breastfeeding, malaria, maternal hypertension, premature labour and prevention of HIV transmission. Most reviews included studies from developing settings. However for large portions of the guidelines, particularly health services delivery, there were no relevant reviews. Only 18 (9.1%) reviews have summaries in Evidence Aid. CONCLUSIONS We did not identify any evidence-based guidelines for perinatal and child health care in disaster settings. We found many Cochrane reviews that could contribute to the evidence-base supporting future guidelines. However there are important issues to be addressed in terms of the relevance of the available reviews and increasing the number of reviews addressing health care delivery.
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Affiliation(s)
- Tari J Turner
- Monash Institute of Health Services Research, Monash University, Locked Bag 29, Clayton 3168 Australia
- Centre for Clinical Effectiveness, Southern Health, Locked Bag 29, Clayton 3168 Australia
| | - Hayley Barnes
- previously of the Australasian Cochrane Centre, Monash University, Locked Bag 29, Clayton 3168 Australia
| | - Jane Reid
- Centre for Clinical Effectiveness, Southern Health, Locked Bag 29, Clayton 3168 Australia
| | - Marie Garrubba
- Centre for Clinical Effectiveness, Southern Health, Locked Bag 29, Clayton 3168 Australia
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Sheikh L, Johnston S, Thangaratinam S, Kilby MD, Khan KS. A review of the methodological features of systematic reviews in maternal medicine. BMC Med 2007; 5:10. [PMID: 17524137 PMCID: PMC1910604 DOI: 10.1186/1741-7015-5-10] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2006] [Accepted: 05/24/2007] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In maternal medicine, research evidence is scattered making it difficult to access information for clinical decision making. Systematic reviews of good methodological quality are essential to provide valid inferences and to produce usable evidence summaries to guide management. This review assesses the methodological features of existing systematic reviews in maternal medicine, comparing Cochrane and non-Cochrane reviews in maternal medicine. METHODS Medline, Embase, Database of Reviews of Effectiveness (DARE) and Cochrane Database of Systematic Reviews (CDSR) were searched for relevant reviews published between 2001 and 2006. We selected those reviews in which a minimum of two databases were searched and the primary outcome was related to the maternal condition. The selected reviews were assessed for information on framing of question, literature search and methods of review. RESULTS Out of 2846 citations, 68 reviews were selected. Among these, 39 (57%) were Cochrane reviews. Most of the reviews (50/68, 74%) evaluated therapeutic interventions. Overall, 54/68 (79%) addressed a focussed question. Although 64/68 (94%) reviews had a detailed search description, only 17/68 (25%) searched without language restriction. 32/68 (47%) attempted to include unpublished data and 11/68 (16%) assessed for the risk of missing studies quantitatively. The reviews had deficiencies in the assessment of validity of studies and exploration for heterogeneity. When compared to Cochrane reviews, other reviews were significantly inferior in specifying questions (OR 20.3, 95% CI 1.1-381.3, p = 0.04), framing focussed questions (OR 30.9, 95% CI 3.7- 256.2, p = 0.001), use of unpublished data (OR 5.6, 95% CI 1.9-16.4, p = 0.002), assessment for heterogeneity (OR 38.1, 95%CI 2.1, 688.2, p = 0.01) and use of meta-analyses (OR 3.7, 95% CI 1.3-10.8, p = 0.02). CONCLUSION This study identifies areas which have a strong influence on maternal morbidity and mortality but lack good quality systematic reviews. Overall quality of the existing systematic reviews was variable. Cochrane reviews were of better quality as compared to other reviews. There is a need for good quality systematic reviews to inform practice in maternal medicine.
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Affiliation(s)
- Lumaan Sheikh
- Academic Unit, Birmingham Women's Hospital, University of Birmingham, Birmingham B15 2 TG, UK
| | - Shelley Johnston
- Academic Unit, Birmingham Women's Hospital, University of Birmingham, Birmingham B15 2 TG, UK
| | - Shakila Thangaratinam
- Academic Unit, Birmingham Women's Hospital, University of Birmingham, Birmingham B15 2 TG, UK
- Clinical Lecturer in Obstetrics and Gynaecology and Clinical Epidemiology, Academic Unit, 3rd floor, Birmingham Women's Hospital, Birmingham B15 2TG, UK
| | - Mark D Kilby
- Academic Unit, Birmingham Women's Hospital, University of Birmingham, Birmingham B15 2 TG, UK
| | - Khalid S Khan
- Academic Unit, Birmingham Women's Hospital, University of Birmingham, Birmingham B15 2 TG, UK
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