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Abstract
Discussion Forum (0)
Introduction: Labor progression was first described by Friedman in 1954 and re-evaluated by Zhang in 2010 to better reflect modern day interventions and populations. The purpose of this study is to evaluate the differences in labor progression based on maternally reported race/ethnicity.

Methods: An IRB approved, multi-center, retrospective study of deliveries from January 1, 2016 to December 31, 2019 was conducted. Women presenting at 37 weeks or greater with singleton pregnancies that delivered vaginally were included. Patients with prior cesarean deliveries, non-cephalic presentation or fewer than 2 cervical exams were excluded. Race and ethnicity were self-reported.

Results: 9,444 patients were included. Among nulliparous women, there were significant differences in both the durations of active labor (p=.01) and second stage (p < .001). Non-Hispanic whites (NHW) had the shortest active phase of labor (224.2 minutes), followed by non-Hispanic blacks (NHB) (230.3), Asians (250.2) and then Hispanics (257.9). NHB women had the shortest second stage (72.5 minutes) followed by Hispanic (91.4), NHW (99.5) and lastly, Asian women (111.0). Multiparous patients demonstrated similar differences in both active labor (p < .001) and second stage (p < .001). NHW women had the shortest active phase (139.1 minutes), then NHB (163.9), Asian (166.8), and Hispanic women (175.6). NHB women had the shortest second stage (25.6 minutes), followed by NHW (28.9), Hispanic (32.9) and Asian women (41.3).

Conclusion/Implications: This study demonstrates that differences exist between racial groups during labor. Further research is needed to determine if this is due to implicit bias in management or if these differences have clinical significance.

Introduction: Labor progression was first described by Friedman in 1954 and re-evaluated by Zhang in 2010 to better reflect modern day interventions and populations. The purpose of this study is to evaluate the differences in labor progression based on maternally reported race/ethnicity.

Methods: An IRB approved, multi-center, retrospective study of deliveries from January 1, 2016 to December 31, 2019 was conducted. Women presenting at 37 weeks or greater with singleton pregnancies that delivered vaginally were included. Patients with prior cesarean deliveries, non-cephalic presentation or fewer than 2 cervical exams were excluded. Race and ethnicity were self-reported.

Results: 9,444 patients were included. Among nulliparous women, there were significant differences in both the durations of active labor (p=.01) and second stage (p < .001). Non-Hispanic whites (NHW) had the shortest active phase of labor (224.2 minutes), followed by non-Hispanic blacks (NHB) (230.3), Asians (250.2) and then Hispanics (257.9). NHB women had the shortest second stage (72.5 minutes) followed by Hispanic (91.4), NHW (99.5) and lastly, Asian women (111.0). Multiparous patients demonstrated similar differences in both active labor (p < .001) and second stage (p < .001). NHW women had the shortest active phase (139.1 minutes), then NHB (163.9), Asian (166.8), and Hispanic women (175.6). NHB women had the shortest second stage (25.6 minutes), followed by NHW (28.9), Hispanic (32.9) and Asian women (41.3).

Conclusion/Implications: This study demonstrates that differences exist between racial groups during labor. Further research is needed to determine if this is due to implicit bias in management or if these differences have clinical significance.

Labor Progression by Self -Reported Maternal Race/Ethnicity
Dr. Eileen OConnor
Dr. Eileen OConnor
Affiliations:
TriHealth, Cincinnati, OH
ACOG ePoster. OConnor E. 04/03/2021; 318558; 955
user
Dr. Eileen OConnor
Affiliations:
TriHealth, Cincinnati, OH
Abstract
Discussion Forum (0)
Introduction: Labor progression was first described by Friedman in 1954 and re-evaluated by Zhang in 2010 to better reflect modern day interventions and populations. The purpose of this study is to evaluate the differences in labor progression based on maternally reported race/ethnicity.

Methods: An IRB approved, multi-center, retrospective study of deliveries from January 1, 2016 to December 31, 2019 was conducted. Women presenting at 37 weeks or greater with singleton pregnancies that delivered vaginally were included. Patients with prior cesarean deliveries, non-cephalic presentation or fewer than 2 cervical exams were excluded. Race and ethnicity were self-reported.

Results: 9,444 patients were included. Among nulliparous women, there were significant differences in both the durations of active labor (p=.01) and second stage (p < .001). Non-Hispanic whites (NHW) had the shortest active phase of labor (224.2 minutes), followed by non-Hispanic blacks (NHB) (230.3), Asians (250.2) and then Hispanics (257.9). NHB women had the shortest second stage (72.5 minutes) followed by Hispanic (91.4), NHW (99.5) and lastly, Asian women (111.0). Multiparous patients demonstrated similar differences in both active labor (p < .001) and second stage (p < .001). NHW women had the shortest active phase (139.1 minutes), then NHB (163.9), Asian (166.8), and Hispanic women (175.6). NHB women had the shortest second stage (25.6 minutes), followed by NHW (28.9), Hispanic (32.9) and Asian women (41.3).

Conclusion/Implications: This study demonstrates that differences exist between racial groups during labor. Further research is needed to determine if this is due to implicit bias in management or if these differences have clinical significance.

Introduction: Labor progression was first described by Friedman in 1954 and re-evaluated by Zhang in 2010 to better reflect modern day interventions and populations. The purpose of this study is to evaluate the differences in labor progression based on maternally reported race/ethnicity.

Methods: An IRB approved, multi-center, retrospective study of deliveries from January 1, 2016 to December 31, 2019 was conducted. Women presenting at 37 weeks or greater with singleton pregnancies that delivered vaginally were included. Patients with prior cesarean deliveries, non-cephalic presentation or fewer than 2 cervical exams were excluded. Race and ethnicity were self-reported.

Results: 9,444 patients were included. Among nulliparous women, there were significant differences in both the durations of active labor (p=.01) and second stage (p < .001). Non-Hispanic whites (NHW) had the shortest active phase of labor (224.2 minutes), followed by non-Hispanic blacks (NHB) (230.3), Asians (250.2) and then Hispanics (257.9). NHB women had the shortest second stage (72.5 minutes) followed by Hispanic (91.4), NHW (99.5) and lastly, Asian women (111.0). Multiparous patients demonstrated similar differences in both active labor (p < .001) and second stage (p < .001). NHW women had the shortest active phase (139.1 minutes), then NHB (163.9), Asian (166.8), and Hispanic women (175.6). NHB women had the shortest second stage (25.6 minutes), followed by NHW (28.9), Hispanic (32.9) and Asian women (41.3).

Conclusion/Implications: This study demonstrates that differences exist between racial groups during labor. Further research is needed to determine if this is due to implicit bias in management or if these differences have clinical significance.

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