Table 3.

Change in preoperative Patient-Reported Outcomes at 12 months: mean (SD).

Outcomes	Depressed	Non-Depressed	P*
NDI	30.6 (22.0)	25.7 (20.0)	<.001
PCS	7.0 (9.5)	11.3 (10.1)	.002
MCS	14.9 (12.4)	4.7 (11.4)	<.001
Neck pain	4.3 (2.8)	3.9 (2.9)	<.001
Arm pain	2.8 (3.2)	2.9 (3.1)	<.001

NDI, Neck Disability Index; PCS, Physical Component Summary; MCS, Mental Component Summary.

^*Adjusted for preoperative scores, smoking status, and strenuous work.