Table 4.

Evaluation of quality of life in mental (SF-36 MCS) and physical (SF-36 PCS) spheres, and pain (pain VAS) and disability (HAQ DI)

Variables studied	SF-36
	Quality of life in PCS (0–100)				Quality of life in MCS (0–100)
	OA		RA		OA		RA
	Mean ± SD	F-statistic#/P-value	Mean ± SD	F-statistic#/P-value	Mean ± SD	F-statistic#/P-value	Mean ± SD	F-statistic#/P-value
Pain VAS (0–100)
0–35	61.83±18.92	21.01 (<0.001)	56.46±17.50	10.22 (<0.001)	63.89±18.88	11.79 (<0.001)	55.85±19.39	2.195 (0.116)
36–66	42.97±18.44		36.33±12.75		49.50±19.55		45.30±20.17
67–100	37.11±15.50		34.37±13.14		42.24±21.25		40.44±21.28
HAQ DI (0–3)
0–1	51.44±18.87	42.78 (<0.001)	44.92±15.81	9.732 (<0.001)	56.69±19.17	29.69 (<0.001)	50.61±20.53	2.905 (0.05)
>1–2	32.53±10.51		34.38±12.61		37.86 ±17.88		41.75±20.10
>2–3	24.54±9.56		26.47±5.03		29.53±21.05		35.45±21.89

Note:

^#The univariate ANOVA for independent groups, F-statistic.

Abbreviations: ANOVA, analysis of variance; HAQ DI, health assessment questionnaire disability index; MCS, mental sphere; PCS, physical sphere; SF-36, 36-item short form health survey; pain VAS, visual analog scale of pain; OA, osteoarthritis; RA, rheumatoid arthritis; SD, standard deviation.