. 2018 Jul 20;11:1359–1366. doi: 10.2147/JPR.S160472

Table 4.

Clinical outcomes before and after surgery

	VAS score	JOA score	NDI score
NO-ALOD
Presurgery	3.22±0.95	8.62±1.29	34.49±4.44
3 months postsurgery	1.30±0.74^a	14.17±1.57^a	14.17±4.03^a
6 months postsurgery	1.02±0.78^a	14.99±1.65^a	13.05±3.33^a
12 months postsurgery	1.26±0.69^a	14.73±1.84^a	13.53±4.14^a
24 months postsurgery	1.57±0.80^a	13.71±2.51^a	14.32±5.74^a
ALOD
Presurgery	3.27±0.70	8.60±0.99	35.40±4.50
3 months postsurgery	1.40±0.63^a	14.20±1.42^a	14.33±4.70^a
6 months postsurgery	1.13±0.74^a	14.40±1.45^a	14.20±1.82^a
12 months postsurgery	1.47±0.64^a	13.87±1.81^a	15.73±5.47^a
24 months postsurgery	2.20±0.77^a,^b	11.80±3.10^a,^b	18.67±7.34^a,^b

Note:

P<0.05 vs presurgery;

P<0.05 between NO-ALOD and ALOD groups.

Abbreviations:ALOD, adjacent-level ossification development; JOA, Japanese Orthopedic Association; NDI, neck disability index; VAS, visual analog scale.