Table 2 Surgical site infection in the non-fixed nurse team vs. fixed nurse team by multifactor logistic regression analysis

Fixed nurse team

0.66 (0.44 to 0.99)

0.044

0.57 (0.36 to 0.88)

0.013

Female

0.75 (0.48 to 1.16)

0.211

0.71 (0.43 to 1.14)

0.164

Age

1.00 (0.99 to 1.01)

0.569

1.00 (0.99 to 1.01)

0.760

Diabetes

1.11 (0.57 to 2.03)

0.751

1.07 (0.50 to 2.09)

0.862

Hypertension

0.85 (0.45 to 1.53)

0.613

0.98 (0.49 to 1.82)

0.942

SWC Class I (reference)

1

1

1

1

SWC Class II

5.27 (2.90 to 9.37)

<0.001

5.48 (2.80, 10.42)

<0.001

SWC Class III

7.32 (4.30 to 12.41)

<0.001

7.03 (4.00, 12.39)

<0.001

Bone and Bones (reference)

1

1

1

1

Joints

0.06 (0.01 to 0.20)

<0.001

0.04 (0.00, 0.19)

0.001

Spine

0.23 (0.11 to 0.45)

<0.001

0.24 (0.10, 0.49)

<0.001

Others

1.62 (0.99 to 2.68)

0.056

1.93 (1.12, 3.36)

0.018