Effect of
Hospital Volume
1.000
1.660
3.549
Odds
Ratio
Re-operation
Rate
(1.289, 2.138)
(2.173, 5.796)
95% CI
(1.789, 6.262)
(1.163, 7.776)
1.000
3.347
3.008
High*
Medium
Low
95% CI
Odds
Ratio
Excision
Rate
*Reference to which
other variables compared