Table 4 Postoperative complications in both groups (cases, %)

Observation group (n=98)

4(4.1)

2(2.0)

6(6.1)

2(2.0)

3(1.0)

1(1.0)

0

18(18.4)

Control group (n=98)

6(6.1)

3(3.1)

5(5.1)

3(3.1)

2(5.1)

8(8.2)

0

27(27.6)

χ²value

0.422

0.000

0.096

0.000

0.000

4.193

-

2.336

P value

0.516⁽¹⁾

1.000⁽²⁾

0.756⁽¹⁾

1.000⁽²⁾

1.000⁽²⁾

0.041⁽²⁾

-

0.126⁽¹⁾