Table 2.

NRS scores for neck pain from postoperative day 3 to 14.

NRS Scores for Neck Pain	Group M (exLAP)	Group H (Conventional)	p-Value
Day 3	4.0 ± 2.1	6.6 ± 2.3	0.004
Day 5	3.5 ± 1.2	5.1 ± 2.3	0.025
Day 7	2.4 ± 1.1	4.9 ± 2.0	<0.001
Day 14	1.0 ± 1.1	3.1 ± 1.2	<0.001

Values are presented as means ± standard deviations unless otherwise indicated. Group M underwent exoscopic minimally invasive open-door laminoplasty (exLAP). Group H underwent conventional Hirabayashi open-door laminoplasty. NRS, numerical rating scale.