Table 3

Complication rates in PLF patients after NSAIDs use.

Complication	NSAIDs <72 h
Complication	N Control	N Intervention	OR/IRR	CI Lower	CI Upper	P
Readmission	47,754	873	0.883	0.631	1.237	0.470
Pseudoarthrosis and hardware failure	47,754	873	1.198	1.020	1.408	0.028
Wound complications	47,754	873	0.692	0.538	0.889	0.004
Length of stay	47,754	873	0.736	0.706	0.768	<0.001

Complication	NSAIDs 72 h to 90 d
Complication	N Control	N Intervention	OR/IRR	CI Lower	CI Upper	P
Readmission	47,754	10,526	1.011	0.962	1.063	0.666
Pseudoarthrosis and hardware failure	47,754	10,526	1.042	1.017	1.068	0.001
Wound complications	47,754	10,526	1.069	1.035	1.105	<0.001

Complication	NSAIDs 90 d to 1 y
Complication	N Control	N Intervention	OR/IRR	CI Lower	CI Upper	P
Readmission	47,754	13,633	1.020	0.990	1.051	0.186
Pseudoarthrosis and hardware failure	47,754	13,633	1.024	1.009	1.039	0.002
Wound complications	47,754	13,633	1.001	0.980	1.021	0.941

Abbreviations: IRR, incidence rate ratio; NSAIDs, nonsteroidal anti-inflammatory drugs; PLF, posterior lumbar fusion.
Note: Bold values indicate a significance at a Bonferroni-adjusted P value of <0.01.