. 2016 Oct 17;14(4):322–332. doi: 10.5217/ir.2016.14.4.322

Table 4. Comparison of CD Operations in China before and after the Year 2010.

Variable	1990–2009				2010–2014				P -value
Variable	Available centers	Available sample size	No. of cases	Average rate (mean±SD, %)	Available centers	Available sample size	No. of cases	Average rate (mean±SD, %)	P -value
No. of patients undergoing surgery	741				1,266
Emergency operation	7	345	75	39.0±36.1	8	387	160	44.8±22.7	0.7120
Surgical indications	15	676	476	68.9±26.8	21	993	677	66.9±29.5	0.8360
Misdiagnosis	16	591	304	58.2±29.0	19	677	274	45.7±32.3	0.2980
Postoperative complications	12	414	103	23.9±2.5	16	911	164	20.2±3.8	0.0450^a
Reoperation within 30 days	6	233	11	5.9±6.7	10	412	96	14.5±13.5	0.1710
In-hospital mortality	13	589	20	5.1±3.9	22	945	6	1.1±1.9	0.0002^a

^aP<0.05.