Table 5. Relation between categories of risk and in-hospital complications.

^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	153; 29.1	373; 70.9	526; 58.4
Moderate risk	113; 62.4	68; 37.6	181; 20.1
High risk	184; 95.3	9; 4.7	193; 21.4
Total	450; 50.0	450; 50.0	900; 100