a significant trendP <0.0001
There was a significant trend towards an increasing use of VATS over time (χ2 = 41.85, P <0.0001; Figure 2A ).
There was a significant trend towards an increasing use of VATS over time (χ2 = 41.85, P <0.0001; Figure 2A ).
Since its routine introduction in 2002 in our hospital, we observed a clear trend over time towards increased use of VATS, which accounted for almost 50% of operations in the final year analysed.