Validity and Reliability of Short-Form McGill Pain Questionnaire-2 (SF-MPQ-2) in Iranian People with Parkinson’s Disease

Table 2

Factor analysis for SF-MPQ-2 in people with idiopathic Parkinson’s disease (n = 428).

Items	Factor 1	Factor 2	Factor 3	Factor 4
Throbbing pain	0.78	0.22	0.05	0.28
Cramping pain	0.81	0.14	0.20	0.02
Gnawing pain	0.71	0.31	0.34	0.16
Aching pain	0.54	0.19	0.35	0.15
Heavy pain	0.68	0.21	0.06	0.33
Tender	0.72	0.21	0.19	0.39
Shooting pain	0.17	0.78	0.21	0.09
Stabbing pain	0.32	0.72	0.17	0.08
Sharp pain	0.44	0.69	0.06	0.12
Splitting pain	0.12	0.79	0.09	0.39
Electric-shock pain	0.23	0.38	0.52	0.31
Piercing	0.56	0.22	0.65	0.18
Cold-freezing pain	0.02	0.49	0.51	0.18
Hot-burning pain	0.40	0.38	0.46	0.15
Pain caused by light touch	0.24	0.11	0.59	0.28
Itching	0.11	0.25	0.68	0.17
Tingling or ‘pins and needles’	0.50	0.08	0.53	0.12
Numbness	0.33	0.06	0.74	0.07
Tiring-exhausting	0.14	0.45	0.14	0.53
Fearful	0.28	0.08	0.38	0.74
Sickening	0.28	0.25	0.15	0.79
Punishing-cruel	0.30	0.47	0.24	0.53