Egger M, Smith GD: Meta-analysis: potentials and promise. BMJ. 1997, 315: 1371-1374. 10.1136/bmj.315.7119.1371.
Article
CAS
PubMed
PubMed Central
Google Scholar
Borenstein M, Hedges LV, Higgins JP, Rothstein HR: Introduction to Meta-analysis. 2011, John Wiley and Sons Limited: West Sussex
Google Scholar
Cohn LD, Becker BJ: How meta-analysis increases statistical power. Psychol Methods. 2003, 8: 243-253.
Article
PubMed
Google Scholar
Altman DG, Royston P: The cost of dichotomising continuous variables. BMJ. 2006, 332: 1080-
Article
PubMed
PubMed Central
Google Scholar
Streiner DL: Breaking up is hard to do: the heartbreak of dichotomizing continuous data. Can J Psychiatry. 2002, 47: 262-266.
PubMed
Google Scholar
Selvin S: Two issues concerning the analysis of grouped data. Eur J Epidemiol. 1987, 3: 284-287. 10.1007/BF00149737.
Article
CAS
PubMed
Google Scholar
Senn S: Disappointing dichotomies. Pharm Stat. 2003, 2: 239-240. 10.1002/pst.90.
Article
Google Scholar
Whitehead A, Bailey AJ, Elbourne D: Combining summaries of binary outcomes with those of continuous outcomes in a meta-analysis. J Biopharm Stat. 1999, 9: 1-16. 10.1081/BIP-100100997.
Article
CAS
PubMed
Google Scholar
Chinn S: A simple method for converting an odds ratio to effect size for use in meta-analysis. Stat Med. 2000, 19: 3127-3131. 10.1002/1097-0258(20001130)19:22<3127::AID-SIM784>3.0.CO;2-M.
Article
CAS
PubMed
Google Scholar
Peacock JL, Sauzet O, Ewings SM, Kerry SM: Dichotomising continuous data while retaining statistical power using a distributional approach. Stat Med. 2012, 31: 3089-3103. 10.1002/sim.5354.
Article
CAS
PubMed
Google Scholar
Moher D, Liberati A, Tetzlaff J, Altman DG: Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. Ann Intern Med. 2009, 151: 264-269. 10.7326/0003-4819-151-4-200908180-00135. W264
Article
PubMed
Google Scholar
StataCorp: Release 12 edition. Stata Statistical Software. 2011, College Station, TX: StataCorp LP
Google Scholar
Abou El Senoun G, Dowswell T, Mousa HA: Planned home versus hospital care for preterm prelabour rupture of the membranes (PPROM) prior to 37 weeks’ gestation. Cochrane Database Syst Rev. 2010, CD008053-
Google Scholar
Alfirevic Z, Stampalija T, Gyte Gillian ML: Fetal and umbilical Doppler ultrasound in high-risk pregnancies. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Alfirevic Z, Stampalija T, Gyte Gillian ML: Fetal and umbilical Doppler ultrasound in normal pregnancy. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Begley CM, Gyte GM, Murphy DJ, Devane D, McDonald SJ, McGuire W: Active versus expectant management for women in the third stage of labour. Cochrane Database Syst Rev. 2010, CD007412-
Google Scholar
Bevilacqua E, Brunelli R, Anceschi MM: Review and meta-analysis: benefits and risks of multiple courses of antenatal corticosteroids. J Matern Fetal Neonatal Med. 2010, 23: 244-260. 10.3109/14767050903165222.
Article
CAS
PubMed
Google Scholar
Blanco CG, Ballesteros AC, Saladich IG, Pla RC: Glycemic control and pregnancy outcomes in women with type 1 diabetes mellitus using lispro versus regular insulin: a systematic review and meta-analysis. Diabetes Technol Therapeutics. 2011, 13 (9): 907-911. 10.1089/dia.2011.0032.
Article
CAS
Google Scholar
Buchanan Sarah L, Crowther Caroline A, Levett Kate M, Middleton P, Morris J, Buchanan Sarah L, Crowther Caroline A, Levett Kate M, Middleton P, Morris J: Planned early birth versus expectant management for women with preterm prelabour rupture of membranes prior to 37 weeks’ gestation for improving pregnancy outcome. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Coleman T, Chamberlain C, Cooper S, Leonardi-Bee J: Efficacy and safety of nicotine replacement therapy for smoking cessation in pregnancy: systematic review and meta-analysis. Addiction (Abingdon, England). 2011, 106 (1): 52-61. 10.1111/j.1360-0443.2010.03179.x.
Article
Google Scholar
Crowther CA, McKinlay CJ, Middleton P, Harding JE: Repeat doses of prenatal corticosteroids for women at risk of preterm birth for improving neonatal health outcomes. Cochrane Database Syst Rev. 2011, CD003935-
Google Scholar
Dhulkotia JS, Ola B, Fraser R, Farrell T: Oral hypoglycemic agents vs insulin in management of gestational diabetes: a systematic review and metaanalysis. Am J Obstet Gynecol. 2010, 203: 457-e451-459
Article
PubMed
Google Scholar
Gebreselassie SG, Gashe FE: A systematic review of effect of prenatal zinc supplementation on birthweight: meta-analysis of 17 randomized controlled trials. J Health Popul Nutr. 2011, 29: 134-140.
PubMed
PubMed Central
Google Scholar
Imdad A, Bhutta ZA: Effect of balanced protein energy supplementation during pregnancy on birth outcomes. BMC Public Health. 2011, 11 (Suppl 3): S17-10.1186/1471-2458-11-S3-S17.
Article
PubMed
PubMed Central
Google Scholar
Lassi Zohra S, Haider Batool A, Bhutta Zulfiqar A: Community-based intervention packages for reducing maternal and neonatal morbidity and mortality and improving neonatal outcomes. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Mackeen AD, Seibel-Seamon J, Grimes-Dennis J, Baxter Jason K, Berghella V: Tocolytics for preterm premature rupture of membranes. Cochrane Database of Systematic Reviews. 2011, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Mak A, Cheung MWL, Cheak AAC, Chun-Man Ho R: Combination of heparin and aspirin is superior to aspirin alone in enhancing live births in patients with recurrent pregnancy loss and positive anti-phospholipid antibodies: a meta-analysis of randomized controlled trials and meta-regression. Rheumatology. 2010, 49 (2): 281-288. 10.1093/rheumatology/kep373.
Article
CAS
PubMed
Google Scholar
Middleton P, Crowther Caroline A, Simmonds L, Muller P: Different intensities of glycaemic control for pregnant women with pre-existing diabetes. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Nabhan AF, Elsedawy MM: Tight control of mild-moderate pre-existing or non-proteinuric gestational hypertension. Cochrane Database Syst Rev. 2011, CD006907-
Google Scholar
Quinlivan JA, Julania S, Lam L: Antenatal dietary interventions in obese pregnant women to restrict gestational weight gain to institute of medicine recommendations: a meta-analysis. Obstet Gynecol. 2011, 118 (6): 1395-1401. 10.1097/AOG.0b013e3182396bc6.
Article
PubMed
Google Scholar
Rumbold A, Middleton P, Pan N, Crowther Caroline A: Vitamin supplementation for preventing miscarriage. Cochrane Database of Systematic Reviews. 2011, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Stampalija T, Gyte Gillian ML, Alfirevic Z: Utero-placental Doppler ultrasound for improving pregnancy outcome. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Vazquez JC, Abalos E: Treatments for symptomatic urinary tract infections during pregnancy. Cochrane Database Syst Rev. 2011, CD002256-
Google Scholar
Buppasiri P, Lumbiganon P, Thinkhamrop J, Ngamjarus C, Laopaiboon M: Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes. Cochrane Database Syst Rev. 2011, CD007079-
Google Scholar
Crowther CA, Han S: Hospitalisation and bed rest for multiple pregnancy. Cochrane Database Syst Rev. 2010, CD000110-
Google Scholar
Dodd JM, Grivell RM, Crowther CA, Robinson JS: Antenatal interventions for overweight or obese pregnant women: a systematic review of randomised trials. BJOG. 2010, 117: 1316-1326. 10.1111/j.1471-0528.2010.02540.x.
Article
CAS
PubMed
Google Scholar
Gouin K, Murphy K, Shah PS, Knowledge Synth Grp D: Effects of cocaine use during pregnancy on low birthweight and preterm birth: systematic review and metaanalyses. Am J Obstet Gynecol. 2011, 204:
Google Scholar
Gülmezoglu AM, Azhar M: Interventions for trichomoniasis in pregnancy. Cochrane Database of Systematic Reviews. 2011, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Kawai K, Spiegelman D, Shankar AH, Fawzi WW: Maternal multiple micronutrient supplementation and pregnancy outcomes in developing countries: meta-analysis and meta-regression. Bull World Health Organ. 2011, 89: 402-411B. 10.2471/BLT.10.083758.
Article
PubMed
PubMed Central
Google Scholar
Kenyon S, Boulvain M, Neilson James P: Antibiotics for preterm rupture of membranes. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Ladhani NNN, Shah PS, Murphy KE: Prenatal amphetamine exposure and birth outcomes: a systematic review and metaanalysis. Am J Obstet Gynecol. 2011, 205 (3): 219-e211-219.e217
Article
CAS
PubMed
Google Scholar
Lamont RF, Nhan-Chang CL, Sobel JD, Workowski K, Conde-Agudelo A, Romero R: Treatment of abnormal vaginal flora in early pregnancy with clindamycin for the prevention of spontaneous preterm birth: a systematic review and metaanalysis. Am J Obstet Gynecol. 2011, 205: 177-190. 10.1016/j.ajog.2011.03.047.
Article
PubMed
PubMed Central
Google Scholar
Mathanga DP, Uthman OA, Chinkhumba J: Intermittent preventive treatment regimens for malaria in HIV-positive pregnant women. Cochrane Database Syst Rev. 2011, CD006689-
Google Scholar
McDonald SD, Han Z, Mulla S, Ohlsson A, Beyene J, Murphy KE, Knowledge Synth G: Preterm birth and low birth weight among in vitro fertilization twins: A systematic review and meta-analyses. Euro J Obstet Gynecol Reprod Biol. 2010, 148: 105-113. 10.1016/j.ejogrb.2009.09.019.
Article
Google Scholar
Murphy VE, Namazy JA, Powell H, Schatz M, Chambers C, Attia J, Gibson PG: A meta-analysis of adverse perinatal outcomes in women with asthma. BJOG. 2011, 118: 1314-1323. 10.1111/j.1471-0528.2011.03055.x.
Article
CAS
PubMed
Google Scholar
Reveiz L, Gyte GM, Cuervo LG, Casasbuenas A: Treatments for iron-deficiency anaemia in pregnancy. Cochrane Database Syst Rev. 2011, CD003094-
Google Scholar
Salmasi G, Grady R, Jones J, McDonald SD: Environmental tobacco smoke exposure and perinatal outcomes: a systematic review and meta-analyses. Acta Obstet Gynecol Scand. 2010, 89: 423-441. 10.3109/00016340903505748.
Article
PubMed
Google Scholar
Whitworth M, Bricker L, Neilson James P, Dowswell T: Ultrasound for fetal assessment in early pregnancy. Cochrane Database of Systematic Reviews. 2010, Chichester, UK: John Wiley & Sons, Ltd
Google Scholar
Wiysonge CS, Shey M, Kongnyuy EJ, Sterne JA, Brocklehurst P: Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection. Cochrane Database Syst Rev. 2011, CD003648-
Google Scholar
Pope DP, Mishra V, Thompson L, Siddiqui AR, Rehfuess EA, Weber M, Bruce NG: Risk of low birth weight and stillbirth associated with indoor air pollution from solid fuel use in developing countries. Epidemiol Rev. 2010, 32: 70-81. 10.1093/epirev/mxq005.
Article
PubMed
Google Scholar
Salvig JD, Lamont RF: Evidence regarding an effect of marine n-3 fatty acids on preterm birth: a systematic review and meta-analysis. Acta Obstet Gynecol Scand. 2011, 90: 825-838. 10.1111/j.1600-0412.2011.01171.x.
Article
CAS
PubMed
Google Scholar
Sanchez-Meca J, Marin-Martinez F, Chacon-Moscoso S: Effect-size indices for dichotomized outcomes in meta-analysis. Psychol Methods. 2003, 8: 448-467.
Article
PubMed
Google Scholar