Table 3: Comparison our results with similar studies.
| Scale | Mean score in present study (SE) | Mean scores in similar studies (SE) | ||||
| UK/2000[11] No.=183 | Australia/2000 [15] No.=108 | USA/2002 [12] No.=81 | Poland/2005 [13] No.=104 | Iranian Norms (age >45) [14] No.=1129 | ||
| SF-36 Physical Functioning (PF) | 74.6 (2.6) | 60 (31-85) a | 76.5 (2.1) | 75.5 (2.6) | 63.5 (2.7) | 70.7 (0.7) |
| SF-36 Role – Physical (RP) | 83.3 (3) | 25 (0-100) a | 60.6 (4.1) | 53.7 (5) | 60.1 (4) | 51.5 (1.2) |
| SF-36 Bodily Pain (BP) | 33 (2.3) | 61 (2.1) | 72.1 (2.5) | 72.8 (2.3) | 75 (2.2) | 67.9 (0.8) |
| SF-36 General Health (GH) | 47 (0.9) | 55 (1.8) | 69.6 (2.2) | 63.3 (2.5) | 43.6 (1.7) | 56.5 (0.6) |
| SF-36 Vitality (VT)(Energy/fatigue) | 53.4 (0.9) | 48 (1.8) | 61.7 (2.1) | 60.4 (2.4) | 57.3 (2.4) | 59.6 (0.5) |
| SF-36 Social Functioning (SF) | 48.3 (1.2) | 67 (44-100) a | 79.8 (2.5) | 84 (2.4) | 76.2 (2.4) | 66.7 (0.8) |
| SF-36 Role – Emotional (RE) | 86.9 (2.8) | 50 (0-100) a | 70.7 (3.8) | 71.6 (4.4) | 64.7 (3.8) | 56.6 (1.3) |
| SF-36 Mental Health (MH) | 52 (0.8) | 66 (1.3) | 75.3 (1.9) | 79.3 (1.7) | 63.3 (2.1) | 63.4 (0.5) |
a Medians with the interquartile range in parentheses