Birth Journal Impact Factor & Information

Publisher: Wiley

Journal description

Birth: Issues in Perinatal Care is a multidisciplinary, refereed journal devoted to issues and practices in the care of childbearing women, infants, and families. It is written by and for professionals in maternal and neonatal health, nurses, midwives, physicians, public health workers, childbirth educators, lactation counselors, and other perinatal caregivers and policy makers.The aims of Birth areÖ To publish well-designed research in pregnancy and childbirth, from sophisticated advances in medicine to the parents' physical and emotional needs; To provide a timely and lively forum for current issues in maternal and newborn care and education; To underline the importance of evidence-based medicine in making effective changes in clinical practices.

Current impact factor: 2.05

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 2.048
2012 Impact Factor 2.926
2011 Impact Factor 2.182
2010 Impact Factor 1.821
2009 Impact Factor 1.919
2008 Impact Factor 2.836
2007 Impact Factor 2.217
2006 Impact Factor 2.058
2005 Impact Factor 1.836
2004 Impact Factor 1.981
2003 Impact Factor 1.709
2002 Impact Factor 1.424
2001 Impact Factor 0.917
2000 Impact Factor 1.25
1999 Impact Factor 0.915
1998 Impact Factor 1.164
1997 Impact Factor 0.907
1996 Impact Factor 0.763
1995 Impact Factor 0.814
1994 Impact Factor 0.857
1993 Impact Factor 1.137
1992 Impact Factor 0.536

Impact factor over time

Impact factor

Additional details

5-year impact 3.16
Cited half-life 8.10
Immediacy index 0.15
Eigenfactor 0.00
Article influence 0.89
Website Birth: Issues in Perinatal Care website
Other titles Birth (Berkeley, Calif.: Online), Birth
ISSN 1523-536X
OCLC 40695569
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details


  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author cannot archive a post-print version
  • Restrictions
    • 12 months embargo
  • Conditions
    • Some journals have separate policies, please check with each journal directly
    • On author's personal website, institutional repositories, arXiv, AgEcon, PhilPapers, PubMed Central, RePEc or Social Science Research Network
    • Author's pre-print may not be updated with Publisher's Version/PDF
    • Author's pre-print must acknowledge acceptance for publication
    • On a non-profit server
    • Publisher's version/PDF cannot be used
    • Publisher source must be acknowledged with citation
    • Must link to publisher version with set statement (see policy)
    • If OnlineOpen is available, BBSRC, EPSRC, MRC, NERC and STFC authors, may self-archive after 12 months
    • If OnlineOpen is available, AHRC and ESRC authors, may self-archive after 24 months
    • Publisher last contacted on 07/08/2014
    • This policy is an exception to the default policies of 'Wiley'
  • Classification
    ​ yellow

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Little is known regarding complementary and alternative medicine (CAM) use during pregnancy and the preconception period. Since half of all pregnancies in the United States are unintended, understanding the patterns of CAM use among women of childbearing age has implications for fetal and maternal health. Descriptive statistics were generated from the 2012 National Health Interview Study (NHIS) to estimate weighted prevalence and patterns of CAM use by women of childbearing age. Comparisons were made between pregnant and nonpregnant respondents. In this sample of 10,002 women, 7 percent (n = 727) were recently pregnant. Over one-third of all the women used CAM during the previous year (34/38%, pregnant/nonpregnant, respectively) and only half disclosed CAM use to conventional providers (50/49%). In the adjusted model, taking multivitamins (OR 2.52 [CI 2.22-2.86]) and moderate to heavy alcohol use (OR 1.92 [CI 1.53-2.41]) were more likely associated with CAM use. The two most commonly used modalities were herbs (14/17%) and yoga (13/16%). The top reasons for CAM use were to improve general wellness or to prevent disease (33/35%) and to treat back pain (16/18%). When examining all pregnancy-related symptoms treated with CAM, no difference was found in the rates of CAM use between pregnant and nonpregnant users. CAM use by women of childbearing age in the United States is common, with over a third of the population using one or more therapies. However, only half disclosed their use to conventional providers despite limited evidence on safety and effectiveness. This study highlights the important need for further research in this area. © 2015 Wiley Periodicals, Inc.
    Birth 06/2015; DOI:10.1111/birt.12177
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    ABSTRACT: In 2009 there were an estimated 2.6 million stillbirths worldwide. In the United States, a 2007 systematic review found little consensus about professional behaviors perceived by parents to be most helpful or most distressing. In the United Kingdom, a bereaved parents' organization has highlighted discordance between parental views and clinical guidelines that recommend clinicians do not encourage parents to see and hold their baby. The objective of this review was to identify and synthesize available research reporting parental outcomes relating to seeing and holding. We undertook a systematic review. We included studies of any design, reporting parental experiences and outcomes. Electronic searches (PubMed and PsychINFO) were conducted in January 2014. Three authors independently screened and assessed the quality of the studies before abstracting data and undertaking thematic analysis. We reviewed 741 records and included 23 studies (10 quantitative, 12 qualitative, and 1 mixed-method). Twenty-one studies suggested positive outcomes for parents who saw or held their baby. Increased psychological morbidity was associated with current pregnancy, choice not to see their baby, lack of time with their baby and/or insufficient mementos. Three themes were formulated "positive effects of contact within a traumatic life event," "importance of role of health professionals," and "impact on mothers and fathers: similarities and differences." Stillbirth is a risk factor for increased psychological morbidity. Parents seeing and holding their stillborn baby can be beneficial to their future well-being. Since 2007, there has been a proliferation of studies that challenge clinical guidelines recommending that clinicians do not encourage parental contact. © 2015 Wiley Periodicals, Inc.
    Birth 06/2015; DOI:10.1111/birt.12176
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    ABSTRACT: Although policies have been implemented to improve a breastfeeding-friendly environment, few studies have examined the effectiveness of these policies in Taiwan. We examined progress in breastfeeding environmental factors from 2008 through 2011 in Taiwan and their association with continuing exclusive and any breastfeeding until 6 months postpartum. This study was a secondary data analysis, using four cross-sectional and national surveys of 1,453-12,410 postpartum women in the years 2008 through 2011. Data were collected by telephone interviews, using structured questionnaires with randomly selected postpartum women who gave birth in the indicated years. Results were weighted to enhance representativeness. Logistic regression was used to compute adjusted odds ratios for the use of breastfeeding-friendly services on breastfeeding continuation. The rates of breastfeeding at 6 months postpartum generally increased from 2008 to 2011, despite a drop in 2010. The use of breastfeeding-friendly environmental factors, including breastfeeding rooms in public places or workplaces, breastfeeding consultation phone lines/websites, breastfeeding volunteers, and delivery in baby-friendly hospitals, increased from 2008 to 2011. However, the percentage of women participating in breastfeeding support groups decreased during that period. After controlling for maternal characteristics, use of each of the breastfeeding-friendly environmental factors was significantly and positively associated with continuing breastfeeding until 6 months postpartum. The adjusted odds ratios for breastfeeding-friendly environmental factors ranged from 1.15 to 5.04. The breastfeeding-friendly environment and long-term breastfeeding rates in Taiwan improved from 2008 to 2011, supporting the effectiveness of policy and public health efforts. © 2015 Wiley Periodicals, Inc.
    Birth 06/2015; DOI:10.1111/birt.12170
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    ABSTRACT: To assess the outcomes and costs of hospital admission during the latent versus active phase of labor. Latent labor hospital admission has been consistently associated with elevated maternal risk for increased interventions, including epidural anesthesia and cesarean delivery, longer hospital stay, and higher utilization of hospital resources. A cost-effectiveness model was built to simulate a theoretic cohort of 3.2 million term, medically low-risk women either being admitted in latent labor (< 4 cm dilation) or delaying admission until active labor (≥ 4 cm dilation). Outcomes included epidural use, mode of delivery, stillbirth, maternal death, and costs of care. All probability, cost, and utility estimates were derived from the literature, and total quality-adjusted life years were calculated. Sensitivity analyses and a Monte Carlo simulation were used to investigate the robustness of model assumptions. Delaying admission until active labor would result in 672,000 fewer epidurals, 67,232 fewer cesarean deliveries, and 9.6 fewer maternal deaths in our theoretic cohort as compared to admission during latent labor. Additionally, delaying admission results in a cost savings of $694 million annually in the United States. Sensitivity analyses indicated the model was robust within a wide range of probabilities and costs. Monte Carlo simulation found that delayed admission was the optimal strategy in 76.79 percent of trials. Delaying admission until active labor is a dominant strategy, resulting in both better outcomes and lower costs. Issues related to clinical translation of these findings are explored. © 2015 Wiley Periodicals, Inc.
    Birth 06/2015; DOI:10.1111/birt.12179
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    ABSTRACT: A major contributor to the increase in cesarean deliveries over recent decades is the decline in vaginal births after cesarean (VBAC). Racial and ethnic disparities in other perinatal outcomes are widely recognized, but few studies have been directed toward racial/ethnic differences in VBAC rates. We used the population-based Massachusetts Pregnancy to Early Life (PELL) database to investigate racial/ethnic differences in rates of VBAC for Massachusetts residents with one prior cesarean from 1998 to 2008. The overall VBAC rate was 17.3 percent. After adjusting for demographic, behavioral, and medical risk factors, non-Hispanic Asian mothers had a greater likelihood of VBAC than non-Hispanic white mothers (adjusted risk ratio 1.31 [95% CI 1.23-1.39]). No other racial/ethnic group was significantly different from non-Hispanic whites in adjusted analyses. The likelihood of VBAC also decreased with increasing maternal age. Non-Hispanic Asian women are significantly more likely to have VBAC than non-Hispanic white women. Efforts to reduce cesarean delivery rates in the United States should address these disparities. Future research should investigate factors underlying these differences to ensure that all women have access to appropriate maternity care services. © 2015 Wiley Periodicals, Inc.
    Birth 06/2015; DOI:10.1111/birt.12174
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    ABSTRACT: Background The predictive factors of secondary postpartum hemorrhage (PPH) are little known. Our principal objective was to determine if immediate PPH is a risk factor for severe secondary PPH. We also sought to identify other factors associated with severe secondary PPH.Methods Our historical cohort study included all women who gave birth (≥ 22 weeks) in our level III hospital from 2004 through 2013. The hospital discharge database enabled us to identify all women readmitted during the 42-day postpartum period or who underwent a surgical, medical, or interventional radiology procedure during their immediate postpartum hospitalization. We then examined all medical records to identify the cases involving severe secondary PPH. We studied the known risk factors of secondary PPH and assessed other potential ones: maternal age, multiple pregnancy, induction of labor, cesarean birth, preterm birth, and stillbirth.ResultsThe study included 63 women with a severe secondary PPH and 25,696 women without a secondary PPH. Immediate PPH (aOR 2.7 [95% CI 1.3–5.6]) and maternal age ≥ 35 years (aOR 2.0 [95% CI 1.1–3.7]) were the only factors associated with severe secondary PPH.DiscussionThis cohort study confirms that immediate PPH is a risk factor for severe secondary PPH and reports for the first time an association between secondary PPH and advanced maternal age. It is likely that risk factors for immediate PPH are also risk factors for severe secondary PPH and thus that immediate PPH may be an intermediate factor between its own known risk factors and secondary PPH.
    Birth 05/2015; DOI:10.1111/birt.12175
  • [Show abstract] [Hide abstract]
    ABSTRACT: Media interest in cesarean delivery has grown in recent years driven both by rising cesarean delivery rates and the decision by the American College of Obstetrics and Gynecology (ACOG) to permit elective cesarean (EC) delivery. A content analysis of United States newspaper and magazine articles from 2000 to 2013 (n = 131 articles) was completed to understand how the news media portrays ECs. The majority of articles (71.8%) emphasized reasons to support women having an EC, while 38.2 percent of the articles exhibited themes of physician support for ECs. Relatively few articles mentioned reasons against ECs either from the women's perspective (11.5%) or the practitioners' (3.8%). The most common themes given for women choosing ECs were convenience/scheduling (48.9%), avoidance of pain or fear of labor (29.8%), and physical harm to women from vaginal birth (17.6%). Doctors' perspectives were less prevalent in the media than women's perspectives, but when mentioned they were almost exclusively in support of ECs for reasons including avoiding malpractice (28.2%), avoiding physical harm to the woman or baby (16.8%), and timing/scheduling (14.5%). Media coverage suggests ECs are widely accepted by both women and doctors, with women choosing an EC mainly for convenience/scheduling and fear. However, 43 percent of doctors surveyed by ACOG said they were not willing to perform the procedure, and surveys report that mothers rarely request an EC. © 2015 Wiley Periodicals, Inc.
    Birth 04/2015; 42(2). DOI:10.1111/birt.12161
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    ABSTRACT: External cephalic version (ECV) reduces the chance of breech presentation at term birth and lowers the chance of a cesarean delivery. ECV services are now in place in many units in the United Kingdom but their effectiveness is unknown. The aim of this study was to investigate the reasons for breech presentation at term birth. We performed a retrospective cohort study of 394 consecutive babies who were in breech presentation at term birth in a large United Kingdom maternity unit that offers ECV. The cohort was analyzed over two time periods 10 years apart: 1998-1999 and 2008-2009. Only 33.8 percent of women had undergone a (failed) ECV attempt. This low proportion was mainly because breech presentation was not diagnosed antenatally (27.9%). Other contributing factors were: ECV not offered by clinicians (12.2%), ECV declined by women (14%), and contraindications to ECV (10.7%). Over the 10-year period, the proportion of breech presentations that were not diagnosed antenatally increased from 23.2 to 32.5 percent (p = 0.04), which constituted 52.8 percent of women who had not undergone an ECV attempt in 2008-2009. Failure of clinicians to offer ECV reduced from 21.6 to 3.0 percent (p = 0.0001) and the proportion of women declining ECV decreased from 19.1 to 9.0 percent (p = 0.005). Overall, ECV attempts increased from 28.9 to 38.5 percent (p = 0.05). Although ECV counseling, referral, and attempt rates have increased, failure to detect breech presentation antenatally is the principal barrier to successful ECV. Improved breech detection would have a greater impact than methods to increase ECV success rates. © 2015 Wiley Periodicals, Inc.
    Birth 04/2015; 42(2). DOI:10.1111/birt.12162
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    ABSTRACT: The principal objective of our study was to describe the frequency of severe secondary postpartum hemorrhages (PPH). Our secondary objectives were to describe the different causes of PPH and to assess if the PPH etiologies varied by parity. This is a historical cohort study covering the period from January 1, 2004, through February 13, 2013, in a level III maternity ward. Women were eligible if they were treated for severe secondary PPH during their postpartum hospitalization or were admitted for it after discharge but before the 42nd day postpartum, regardless of the type of delivery. Women were excluded if they gave birth before 22 weeks of gestation or if they had experienced only an immediate PPH (≤ 24 hours after delivery). Eligible patients were identified by the hospital's administrative software. Primiparas and multiparas were compared with Student's t test and a chi-squared or Fisher's exact test. The incidence of severe secondary PPH was 0.23 percent (n = 60/26,023). The mean time between delivery and PPH onset was 13.4 ± 10.8 days. The women's mean age was 30.4 ± 5.7 years and their mean body mass index was 23.4 ± 5.7 kg/m². Placental retention was the cause to which these hemorrhages were most frequently attributed (30.0%). Subinvolution of the placental bed was noted in 13.3 percent of the patients, endometritis in 10.0 percent, pseudoaneurysm of the uterine artery in 3.3 percent, and excessively strong resumption of menses in 3.3 percent; no cause could be determined for 16.7 percent of the cases. Neither clinical signs nor causes differed by parity. Secondary PPH is rare. Accurate diagnosis is based most often on histopathologic findings. © 2015 Wiley Periodicals, Inc.
    Birth 04/2015; 42(2). DOI:10.1111/birt.12164
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    ABSTRACT: Immigrants have higher risks for some adverse obstetric outcomes, and 40 percent of women giving birth at the low-risk maternity ward in Baerum Hospital, Norway, are immigrants. This study compared obstetric outcomes between immigrants and ethnic Norwegians giving birth in a low-risk setting. This was a population-based study linking the Medical Birth Registry of Norway to Statistics Norway. The study included the first registered birth during the study period to immigrant and ethnic Norwegian women at Baerum Hospital from 2006 to 2010. The main outcome measures were onset of labor, operative vaginal delivery, cesarean delivery, episiotomy, postpartum bleeding > 500 mL, epidural analgesia, labor dystocia, gestational age, meconium-stained liquor, 5-minute Apgar score, birthweight, and transfer to a neonatal intensive care unit. A total of 11,540 women originating from 141 countries were divided into seven groups. Compared with Norwegians, women from East, Southeast, and Central Asia had increased risk for operative vaginal delivery, postpartum bleeding, and low Apgar score. The African women had increased risk for postterm birth, meconium-stained liquor, episiotomy, operative vaginal delivery, emergency cesarean delivery, postpartum bleeding, low Apgar score, and low birthweight. Women from South and Western Asia had increased risk for low birthweight. Obstetric outcomes of immigrants differ significantly from those of Norwegians, even in a low-risk maternity unit. Thus, immigrant women would benefit from more targeted care during pregnancy and childbirth, even in low-risk settings. © 2015 Wiley Periodicals, Inc.
    Birth 04/2015; 42(2). DOI:10.1111/birt.12165
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    ABSTRACT: Background The relationship between migration and pregnancy outcomes is complex, with little insight into whether women of refugee background have greater risks of adverse pregnancy outcomes than other migrant women. This study aimed to describe maternal health, pregnancy care, and pregnancy outcomes among migrant women from humanitarian and nonhumanitarian source countries.Methods Retrospective, observational study of singleton births, at a single maternity service in Australia 2002–2011, to migrant women born in humanitarian source countries (HSCs, n = 2,713) and non-HSCs (n = 10,606). Multivariable regression analysis assessed associations between maternal HSC-birth and pregnancy outcomes.ResultsCompared with women from non-HSCs, the following were more common in women from HSCs: age < 20 years (0.6 vs 2.9% p < 0.001), multiparity (51 vs 76% p < 0.001), body mass index (BMI) ≥ 25 (38 vs 50% p < 0.001), anemia (3.2 vs 5.9% p < 0.001), tuberculosis (0.1 vs 0.4% p = 0.001), and syphilis (0.4 vs 2.5% p < 0.001). Maternal HSC-birth was independently associated with poor or no pregnancy care attendance (OR 2.5 [95% CI 1.8–3.6]), late first pregnancy care visit (OR 1.3 [95% CI 1.1–1.5]), and postterm birth (> 41 weeks gestation) (OR 2.5 [95% CI 1.9–3.4]). Stillbirth (0.8 vs 1.2% p = 0.04, OR 1.5 [95% CI 1.0–2.4]) and unplanned birth before arrival at the hospital (0.6 vs 1.2% p < 0.001, OR 1.3 [95% CI 0.8–2.1]) were more common in HSC-born women but not independently associated with maternal HSC-birth after adjusting for age, parity, BMI and relative socioeconomic disadvantage.Conclusions These findings suggest areas where women from HSCs may have additional needs in pregnancy compared with women from non-HSCs. Refugee-focused strategies to support engagement in pregnancy care and address maternal health needs would be expected to improve health outcomes in resettlement countries.
    Birth 04/2015; 42(2). DOI:10.1111/birt.12159
  • Birth 03/2015; 42(2). DOI:10.1111/birt.12169
  • Birth 03/2015; 42(1):1-4. DOI:10.1111/birt.12156
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    ABSTRACT: To evaluate the distribution of women with severe maternal morbidity according to Robson Ten Group Classification System (RTGCS). Secondary analysis of a multicenter cross-sectional study in 27 obstetric units in Brazil, using RTGCS. Cases were classified into potentially life-threatening condition or a maternal near miss or death, according to severity. Certain groups were subdivided for further analysis. Cesarean delivery (CD) rates were reported. Among 7,247 women with severe maternal morbidity, 73.2 percent underwent CD. Group 10 (single, cephalic, preterm) was the most prevalent (33.9%). Groups mostly associated with a severe maternal outcome were: 7 (multiparous, breech), 9 (all abnormal lies, single, term), 8 (all multiple), and 10. Groups 1 (nulliparous, single, cephalic, term, spontaneous) and 3 (multiparous, single, cephalic, term, spontaneous) were associated with better maternal outcome. Group 3 had one severe maternal morbidity to 29 cases of potentially life-threatening, but the ratio was 1:10 for women undergoing CD, indicating a worse outcome. Group 4a (multiparous, no previous CD, single, cephalic, term, induced labor) had a better maternal outcome than those delivered by CD before labor (group 4b). Hypertension was the most common condition of severity. The RTGCS was useful to consider severe maternal morbidity, showing groups with higher CD rates and worse maternal outcomes. © 2015 Wiley Periodicals, Inc.
    Birth 03/2015; 42(1):38-47. DOI:10.1111/birt.12155