Do Birth Certificate Data Accurately Reflect the Number of CNM-Attended Births? An Exploratory Study

Accuracy in Reporting of Kentucky Certified Nurse-Midwives as Attendants in Birth Registration Data

INTRODUCTION

Birth certificate data are used nationally to determine health care policy and health care reimbursement and to demonstrate the legitimacy and value of certified nurse-midwives (CNMs) and certified midwives (CMs) in perinatal and neonatal outcomes. However, the validity of birth certificate data is questionable, in part because of the data collection process. These data are particularly crucial for midwife-attended births because the correct birth attendant is not always accurately identified on the birth certificate. The purpose of this project was to examine the actual number of CNM-reported births compared with those recorded by the Kentucky Office of Vital Statistics and to examine the process used by birth registrars to complete the birth certificate.

METHODS

CNMs attending births in hospitals in Kentucky in 2017 logged their birth statistics. These numbers were compared with the 2017 Kentucky Vital Statistics Birth Certificate data of CNM-attended births. Kentucky birth registrars (50%) who work in facilities where CNMs attend births completed a 32-question survey to describe their process of collecting birth certificate data.

RESULTS

The comparison data revealed that CNM-attended births in Kentucky are underrepresented in the state vital statistics by as much as 19.2%. Birth registrars identified barriers to collecting accurate data including lack of training, multiple sources of data, incomplete prenatal records, and absence of systems to help ensure accuracy.

DISCUSSION

CNMs/CMs should keep personal and practice birth logs and routinely compare these with hospital data kept by the birth registrar. The state office of vital statistics and hospitals should target training to specific facilities that have the most inaccurate data. The Improving Midwifery Birth Numbers Initiative through the American College of Nurse-Midwives Division of Research Data Management Section should continue to encourage midwifery students to complete this research in all 50 states.

Competitive effects of scope of practice restrictions: Public health or public harm?

The demand for healthcare professionals is predicted to grow significantly over the next decade. Securing an adequate workforce is of primary importance to ensure the health and wellbeing of the population in an efficient manner. Occupational licensing laws and related restrictions on scope of practice (SOP) are features of the market for healthcare professionals and are also controversial. At issue is a balance between protecting the public health and removing anticompetitive barriers to entry and practice. In this paper, we examine the case of SOP restrictions for certified nurse midwives (CNMs) and evaluate the effects of changes in states' SOP laws on markets for CNMs and on maternal and infant outcomes. We find that SOP laws are neither helpful nor harmful in regards to health outcomes but states that have no SOP-based barriers have lower rates of induced labor and Cesarean section births. We discuss the implications for state policy.

Characteristics of Spontaneous Births Attended by Midwives and Physicians in US Hospitals in 2014

INTRODUCTION

This study compares characteristics and birth outcomes of women attended by certified nurse-midwives/certified midwives (midwives) and physicians in US hospitals in 2014.

METHODS

Data reported in 2014 on the 2003 version of the US birth certificate were examined. Spontaneous vaginal births attributed to midwives and physicians and occurring in hospitals were included. Demographic and risk profiles and adjusted odds ratios for maternal and newborn outcomes were compared by provider type.

RESULTS

Midwives attended 294,604 (12.21%) and physicians attended 2,117,376 (87.79%) of all spontaneous vaginal births occurring in 47 states. Small but statistically significant differences (P < .05) were evident in most characteristics. Substantively, profiles were remarkably similar along all demographic and many medical risk variables. Age, race, and insurance status varied by less than 2 percentage points; education status and Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) participation varied by less than one percentage point. Parity, body mass index, maternal weight gain, tobacco use, trimester care began, and average number of prenatal visits also varied by less than one to 2 percentage points. Midwives attended women with hypertension, diabetes, and infections in proportions similar to physicians. Physicians attended more women with preterm birth and multiple gestation. Midwives attended more women beyond 41 weeks' gestation. There were no differences in 5-minute Apgar scores, neonatal seizures, anomalous neonates, or those no longer living at the time of data collection. Third- or fourth-degree lacerations (odds ratio [OR], 0.81; 95% confidence interval [CI], 0.78-0.84), labor induction (OR, 0.76; 95% CI, 0.76-0.77), and epidural analgesia use (OR, 0.54; 95% CI, 0.53-0.54) were less likely in midwife-attended births. Birth at greater than 42 weeks' gestation was more likely (OR, 2.07; 95% CI, 1.97-2.17) among midwife-attended births.

DISCUSSION

In 2014, midwives practicing in US hospitals attended women with a range of risks similar to those of women attended by physicians. Small but statistically significant differences were noted in most characteristics and should be controlled in comparative studies. This contrasts with earlier reports of midwives caring for disproportionately disadvantaged women compared to physicians.

The American College of Nurse-Midwives Clarity in Collaboration Project: Describing Midwifery Care in Interprofessional Collaborative Care Models

In 2014, the American College of Nurse-Midwives (ACNM) launched a project called Clarity in Collaboration to develop data definitions related to midwifery and maternity care delivery processes. These definitions are needed to ensure midwifery care delivered in collaborative care models is accurately and consistently captured in clinical documentation systems, data registries, and systems being developed as part of health care restructuring and payment reform. The Clarity in Collaboration project builds on the efforts of the Women's Health Registry Alliance (WHRA), which was recently established by the American College of Obstetricians and Gynecologists. Clarity in Collaboration mirrored the process used by ReVITALize, WHRA's first maternity data standardization project, which focused on establishing standardized clinical data definitions for obstetrics. The ACNM Clarity in Collaboration project brought together maternity and midwifery care experts to complete a year-long consensus process, including a period of public comment, resulting in development of 20 concept definitions. These definitions can be used to describe midwifery care within the context of collaborative care models. This article provides a summary of the ACNM Clarity in Collaboration process with discussion of implications for maternity data collection.

Outcomes of planned home births attended by certified nurse-midwives in southeastern Pennsylvania, 1983-2008

INTRODUCTION

In this study, we examined the perinatal outcomes of planned home births over a 25-year period (1983-2008) in a group of primarily Amish women (98%) attended by certified nurse-midwives (CNMs) in southeastern Pennsylvania.

METHODS

This was a retrospective, descriptive analysis of data (N = 1836 births) from several CNM practices. Data were abstracted for 25 items, including demographics, labor, and birth. Initially, 2 investigators abstracted 15 records to compare assessments and standardize definitions. Charts were then divided and abstracted individually by one investigator. Several relationships were examined in 2 by 2 tables using the chi-square procedure for the difference in proportions. Maternal and newborn transfers to the hospital were included in the analysis.

RESULTS

Of the women who planned home birth for 1836 pregnancies, 1733 of the births occurred at home. Although more than one-third of the women were of high parity (gravida 5-13), rates of postpartum hemorrhage were low (n = 96, 5.5%). There were no maternal deaths. Nearly half of the maternal transfers to the hospital (n = 103, 5.6%) were for ruptured membranes without labor (n = 25, 1.4%) and/or failure to progress (n = 23, 1.3%). The neonatal hospital admission rate also was low (n = 13, 0.75%). Of the 7 (0.4%) early neonatal deaths, all were attributed to lethal congenital anomalies that are common to this population.

DISCUSSION

This study is the first to describe the outcomes of planned home births in a primarily Amish population cared for by CNMs. It also adds to the literature on planned home births in the United States and supports the findings from previous studies that women who have home births attended by CNMs have safety profiles equal to or better than profiles of women who had hospital births in similar populations.

Certified Nurse Midwife-Attended Births: Trends in Washington State, 1995-2004

Nationwide, the proportion of certified nurse-midwife (CNM)-attended births has increased steadily. We examined trends in CNM-attended singleton spontaneous vaginal births between 1995 and 2004 in Washington State by site of birth, payer source, and hospital birth volume. CNMs were more likely than other providers to care for women at risk for adverse outcomes based on several sociodemographic indicators. The increased rate of CNM-attended births occurred primarily in hospitals and among both Medicaid- and privately-funded births. The rate of CNM-attended births doubled in hospitals with high birth volumes. We recommend future research designed to understand these trends.

Finding midwifery in administrative data systems

Nurse-midwifery has accomplished remarkable clinical, policy, and political achievements using specially-collected data. Today, midwifery practice data can be found in existing administrative data systems: birth registration, hospital data depositories, and claims files. Issues in finding midwifery as practice and profession in these data systems are discussed. Improving the integrity of data that reveal midwives as caregivers should be a priority.