Table 14.1Surgical competencies in HMB – comparative studies

Bibliographic informationStudy type and evidence levelNo. of patientsPopulation characteristicsIntervention and comparisonFollow-upOutcome measuresEffect sizeSource of funding and additional comments
Arndt 1995550Case series

EL = 2+
2220 Total abdominal hysterectomies; total cholecystectomy = 43 70; transurethral prostatectomy = 2851 ; Intervertebral disc excision = 1764.MedisGroup Comparative Hospital Database: total cholecystectomy; transuretheral prostatectomy; Total abdominal hysterectomies; Intervertebral disc excision.

Country: USA
total cholecystectomy; transuretheral prostatectomy; Total abdominal hysterectomies; Intervertebral disc excision.N/AVolume–outcome relationship on length of stay and costEffect of surgeon volume of total charge based on multivariate regression: beta-coefficient = 0.005, T-statistic = 0.71 (NS). Cost was significantly influence by patient age and severity.

Effect of surgeon volume on length og stay: beta-coefficient = 0.021, T-statistic = 2.98 (P < 0.05). Length of stay more influenced by age and severity

All other procedures show stronger volume outcome relationships.

Total cholecystectomy: beta-coef = −0.128 and t-statistci = 20.38; transuretheral prostatectomy – beta-coef = −0.49 and t-statistic = 8.13; Intervertebral disc excision – beta-coef = −0.091 and t-statistic = 20.48.
Funding source: Not stated

From: Evidence Tables

Cover of Heavy Menstrual Bleeding
Heavy Menstrual Bleeding.
NICE Clinical Guidelines, No. 44.
National Collaborating Centre for Women's and Children's Health (UK).
London: RCOG Press; 2007 Jan.
Copyright © 2007, National Collaborating Centre for Women's and Children's Health.

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