Table 7

Multivariable analysis of association between number of total allergies and achieving minimal clinically important difference at 1 y in lumbar spine surgery.

Lumbar Spine	RR	P Value^{^a}
Oswestry Disability Index
0 Patient-reported allergies	Ref
1 Patient-reported allergy	0.94	0.793
2 Patient-reported allergies	1.04	0.876
≥3 Patient-reported allergies	1.05	0.883
VAS back pain
0 Patient-reported allergies	Ref
1 Patient-reported allergy	0.99	0.958
2 Patient-reported allergies	0.99	0.983
≥3 Patient-reported allergies	0.74	0.428
VAS leg pain
0 Patient-reported allergies	Ref
1 Patient-reported allergy	0.92	0.744
2 Patient-reported allergies	0.95	0.844
≥3 Patient-reported allergies	0.99	0.976
SF-12PCS
0 Patient-reported allergies	Ref
1 Patient-reported allergy	0.68	0.081
2 Patient-reported allergies	0.62	0.064
≥3 Patient-reported allergies	0.8	0.494
SF-12 MCS
0 Patient-reported allergies	Ref
1 Patient-reported allergy	0.93	0.853
2 Patient-reported allergies	1.13	0.773
≥3 Patient-reported allergies	2.11	0.092
PROMIS
0 Patient-reported allergies	Ref
1 Patient-reported allergy	1	0.987
2 Patient-reported allergies	1.06	0.816
≥3 Patient-reported allergies	0.92	0.821

↵a Multivariable linear regression controlling for gender, CCI, ASA, preoperative depression
ASA, American Society of Anesthesiologists; CCI, Charlson Comorbidity Index; PROMIS, patient-reported outcomes measurement information system; Ref, reference; SF-12 MCS, short form-12 mental component score; SF-12 PCS, short form-12 physical component score; VAS, visual analog scale.