Evidence map›Paper›PMID 37875897›Full record

ArticleBMC health services research2023

Obstetric operating room staffing and operating efficiency using queueing theory.

Grace Lim, Annamarie J Lim, Beth Quinn, Brendan Carvalho, Mark Zakowski, Grant C Lynde

Open access · goldAbstract read
In one paragraph

Article in BMC health services research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
1.8field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 5 citations in OpenAlex.

  1. Capacity Planning (Capital, Staff and Costs) of Inpatient Maternity Services: Pitfalls for the Unwary.International journal of environmental research and public health · 2025
    Article
  2. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 5 institutions in 1 country.

Grace LimDepartment of Anesthesiology & Perioperative Medicine, University of Pittsburgh, 300 Halket Street #3510, Pittsburgh, PA, 15215, USA. Limkg2@upmc.edu.
Annamarie J LimSchumacher Clinical Partners (SCP) Health, Traverse City, MI, USA.
Beth QuinnDepartment of Obstetrics & Gynecology, UPMC Magee-Womens Hospital, University of Pittsburgh, Pittsburgh, PA, USA.
Brendan CarvalhoDepartment of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA, USA.
Mark ZakowskiCedars-Sinai Medical Center, Los Angeles, CA, USA.
Grant C LyndeHospital Corporation of America (HCA) Healthcare, Nashville, TN, USA.
University of Pittsburgh · USCedars-Sinai Medical Center · USHCA Healthcare · USHealthPartners · USStanford Medicine · US

Funding

University of Pittsburgh Department of Anesthesiology & Perioperative Medicine
6 · The paper itself

Abstract

introductionStrategies to achieve efficiency in non-operating room locations have been described, but emergencies and competing priorities in a birth unit can make setting optimal staffing and operation benchmarks challenging. This study used Queuing Theory Analysis (QTA) to identify optimal birth center operating room (OR) and staffing resources using real-world data.

methodsData from a Level 4 Maternity Center (9,626 births/year, cesarean delivery (CD) rate 32%) were abstracted for all labor and delivery operating room activity from July 2019-June 2020. QTA has two variables: Mean Arrival Rate, λ and Mean Service Rate µ. QTA formulas computed probabilities: P

resultsThere were 4,017 total activities in the operating room and 3,092 CD in the study period. Arrival rate λ was 0.45 (patients per hour) at peak hours 07:00-19:00 while λ was 0.34 over all 24 h. The service rate per OR team (µ) was 0.87 (patients per hour) regardless of peak or overall hours. The number of server teams (s) dedicated to OR activity was varied between two and five. Over 24 h, the probability of no patients in the system was P

conclusionQTA is a useful tool to inform birth center OR efficiency while upholding assumed safety standards and factoring peaks and troughs of daily activity. Our findings suggest QTA is feasible to guide staffing for maternity centers of all volumes through varying model parameters. QTA can inform individual hospital-level decisions in setting staffing and space requirements to achieve safe and efficient maternity perioperative care.

Indexed as

Labor, ObstetricOperating RoomsCesarean SectionEfficiencyFemaleHumansPersonnel Staffing and SchedulingPregnancyWorkforceAnesthesiaEfficiencyObstetricOperating roomQueueingStaffing

Identifiers

PMID37875897
PMCPMC10599054
OpenAlexW4387931158

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.