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Table 3 Comparison of outcome measures before and after the interventions

From: A new pathway for elective surgery to reduce cancellation rates

 

Before changes (Jan 2005 – Feb 2008)

After changes (Mar 2008 – Apr 2010)

P-value (Difference between before and after changes)

Cancellation rate (mean % per month)

8.5

4.9

<0.0011

Transformed cancellation rate2

0.30

0.22

<0.0011

Total number of scheduled operations (median per month)

373

400

0.04 3

Total number of performed operations (median per month) 323 378 0.043

323

378

0.04 2

Emergency cases (median per month) 102 103 1.0 3

102

103

1.0 2

(Based on time the time period Jan 2006 to Apr 2010)

Number of consultation at outpatient clinic (mean per month)

2722

3021

0.006 1

(Based on the time period May 2006 to Apr 2010)

  1. 1 Student’s t-test.
  2. 2 Using the Freeman-Tukey double arcsine transformation.
  3. 3 Mann–Whitney U test.