Table 2.

Distribution in type of surgery (%) over time for colon and rectal cancer, 2010–2012.

	Year	Minimally Invasive Surgery	Open surgery	Conversion from minimally invasive to open surgery	Total Number (%)
Colon cancer*	2010	35.6	57.2	7.2	43,436 (100.0)
	2011	39.7	51.4	8.8	45,897 (100.0)
	2012	40.5	51.3	8.3	42,520 (100.0)
Rectal cancer**	2010	11.7	52.6	35.7	4,269 (100.0)
	2011	14.9	48.1	37.1	4,779 (100.0)
	2012	15.2	47.2	37.6	4,440 (100.0)

^*p<0.001;

^**p=0.1708