Table 1. Mean±standard deviation of baseline characteristics in POWs with and without NSCNP

Variables	Without NSCNPa (N=277)	With NSCNP (N=463)	p
Sex	62/215	37/426	-
NRSb	0.64±1.1	5.93±2.8	0.000
NPQc-pain intensity	0.85±0.3	2.61±0.6	0.000
PHTAd	0.76±7.49	0.80±8.45	0.935
PCVAe	18.71±5.06	17.13±5.85	0.000
PHEAf	18.25±7.33	16.33±7.74	0.001
RHTAg	0.57±7.21	1.1±6.66	0.313
RCVAh	–6.79±4.08	–6.44±4.78	0.293
RHEAi	–7.30±5.57	–7.55±5.80	0.556
Protraction distance	59.00±18.17	56.51±19.97	0.083
Retraction distance	21.11±11.45	20.72±12.03	0.654

NSCNP, non-specific chronic neck pain;
NRS, numerical rating scale;
NPQ, Northwick Park neck pain questionnaire;
PHTA, head tilt angle during protraction;
PCVA, craniocervical angle during protraction;
PHEA, head excursion angle during protraction;
RHTA, head tilt angle during retraction;
RCVA, craniocervical angle during retraction;
RHEA, head excursion angle during retraction.