NP	neck pain
YLD	years lived with disability
ROM	range of motion
HA	headache
DDD	degenerative disc disease
CBP®	Chiropractic BioPhysics®
ICD-10	International Classification of Diseases, Tenth Revision
PT	physical therapy
PRO	patient-reported outcome
NRS	numeric rating scale
NDI	neck disability index
MI	Mirror Image®
NLC	neutral lateral cervical
C2-C7	second through seventh cervical vertebrae
IRB	institutional review board
PROM	patient-reported outcome measure
MCID	minimal clinically important difference
CI	confidence interval
°	degree
mm	millimeter
ADL	activities of daily living
HPTM	Harrison posterior tangent method
ARA	absolute rotation angle
ADH	anterior disc height
PDH	posterior disc height
MAD	mean absolute deviation
T,R	Translation, Rotation
x,y,z	x-, y-, z-axes
H,T,P	Head, Thorax, Pelvis
EHR	electronic health records
P-A	posterior-to-anterior
CNS	central nervous system
DV	dependent variables
IVi	independent variables
εi	the idiosyncratic error term
βi	average effect
MRI	magnetic resonance imaging
CT	computed tomography
US	United States