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Table 1 Comparison of general data and screw placement results between the guide template group and the free-hand group

From: Comparison of the 3D-printed operation guide template technique and the free-hand technique for S2-alar-iliac screw placement

Group

Number of cases

Sex

Age (years)

Number of screws

Screw placement duration

Screw placement results (%)

Male

Female

Excellent rate

Good rate

Acceptable rate

Unacceptable rate

Guide template group

21

6

15

56.9 ± 8.4

42

151.6 ± 44.8

95.2 (40/42)

100 (42/42)

100 (42/42)

0 (0/42)

Free-hand group

26

9

17

58.6 ± 8.1

52

138.3 ± 45.9

80.8 (42/52)

94.2 (49/52)

100 (52/52)

0 (0/52)

Statistic value

0.195

− 0.706

1.411

4.368

P value

0.659

0.484

0.162

0.037

0.251