Comparison between Two Low Doses of Amitriptyline in the Management of Chronic Neck Pain: A Randomized, Double-Blind, Comparative Study

Table 3

Outcomes of patients with chronic neck pain treated with 5 and 10 mg amitriptyline.

	Group		value	Mean difference	95% CI
	5 mg	10 mg
NPDI change	48.3 (17.2)	68.2 (13.4)	<0.001	19.9	27.3, 12.6
Pain decrease	3.8 (1.2)	5.7 (1.4)	<0.001	1.9	2.5, 1.3
VAS % change	50.3 (15.9)	71.4 (13.7)	<0.001	21.1	28.2, 14.0
AIS % change	57.7 (10.2)	72.1 (12.0)	<0.001	15.4	20.7, 10.1
HAD-A % change	67.4 (7.1)	75.1 (6.9)	<0.001	7.7	11.1, 4.4
HAD-D % change	60.1 (7.4)	73.6 (8.8)	<0.001	13.6	17.4, 9.7
Patient satisfaction	6.5 (1.3)	7.0 (1.2)	0.117	0.5	1.1, −0.1

Data are expressed as n (%). .