Adaptations in Evoked Pain Sensitivity and Conditioned Pain Modulation after Development of Chronic Neck Pain

Table 1

Comparison of baseline characteristics for participants with chronic neck pain (CNP) and pain-free controls (CON) who did and did not return to complete the 12-month follow-up assessment.

	CNP; completers; ()	CNP; dropouts; ()	p	CON; completers; ()	CON; dropouts; ()	p
Age (years)	27.9 (7.0)	31.2 (7.5)	0.19	26.3 (3.3)	20.0 (9.2)	0.38
Sex (M : F)	3 : 14	1 : 17	0.34	1 : 9	7 : 12	0.12
BMI (kg/m^2)	23.6 (4.8)	23.6 (3.2)	1.0	23.0 (3.7)	25.0 (3.9)	0.19
NDI (points)	0.69 (1.14)	1.1 (1.30)	0.33	0.50 (1.00)	0.10 (0.23)	0.10
Prior injury (%)	18.5	33.3	0.44	11.1	36.8	0.20