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. 2019 Jul 9;13(6):920–927. doi: 10.31616/asj.2019.0033

Table 3.

Screw misplacement, adverse events, and complications

Variable Total (n=73) Group 1 (n=18) Group 2 (n=18) Group 3 (n=18) Group 4 (n=19) p-valuea)
Pedicle screws placed 352 (100.0) 89 (100.0) 87 (100.0) 90 (100.0) 86 (100.0)
Intraoperative screw revision 1 (0.3) 0 0 0 1 (1.2)
Misplaced screws 0 0 0 0 0
Complications (%) 4 (5.5) 0 1 (5.6) 3 (16.7) 0 0.093

Values are presented as number (%), unless otherwise stated.

a)

From Fisher’s exact, with Freeman-Halton extension, chi-square, Mann-Whitney U-test, Kruskal-Wallis, one way analysis of variance as appropriate.

*

p <0.05 (significant).