A Longitudinal Study of the Reliability of Acupuncture Deqi Sensations in Knee Osteoarthritis

Table 6

Results of principal component analysis.

Variable	Factor 1	Factor 2
Heaviness	.90	—
Fullness/distension	.87	—
Dull pain	.81	—
Cold	.81	—
Deep pressure	.75	.55
Soreness	.75	.40
Aching	.75	.55
Numbness	.60	.56
Sharp pain	.54	.71
Warmth	.42	.49
Throbbing	—	.95
Tingling	—	.85