Table 6. Relation between categories of risk and in-hospital complications in validation’spopulation.

^a Percent calculated of the patients’ total in each category of risk

^b Percent calculated of the total of the column

Category of risk	In-hospital complications: Present (n; %)a	In-hospital complications: Absent (n; %)a	Total (n; %)b
Low risk	53; 23.8	170; 76.2	223; 95.7
Moderate risk	4; 100	0	4; 1.7
High risk	6; 100	0	6; 2.6
Total	63; 27.0	170; 73.0	233; 100