TABLE 5.

Mean (95% CI) of the NRS for Neck Pain and the NDI According to Patient-reported Health Status (Visual Analogue Scale [0–100]), Graded as Low (<25 Percentile), Moderate (50–75 Percentile), And high (>75 Percentile) Severity

	N	Mean	95% CI
NRS neck pain
High severity	49	6.1	5.7–6.5
Moderate severity	53	4.9	4.5–5.3
Low severity	48	4.5	4.0–5.5
NDI score
High severity	49	53.2	47.3–59.1
Moderate severity	53	42.0	36.7–47.3
Low severity	48	27.8	23.8–31.7

CI indicates confidence interval; NDI, Neck Disability Index; NRS, Numerical Rating Scale.