Table 2 Patients Characteristics

Gender (male)

188 (45.5%)

Age (years)

68.94 (9.4)

Marital status (married)

281(68%)

Living arrangements (alone)

105 (25.4%)

Ethnicity (white)

410 (99.3%)

Paid employment (yes)

69 (16.7%)

Usual Pain

   None

1 (0.2%)

   Mild

7 (1.7%)

   Moderate

95 (23.1%)

   Severe

258 (62.8%)

   Extreme

50 (12.2%)

Problems walking on the flat

   None

9 (2.2%)

   Mild

50 (12.2%)

   Moderate

203 (49.6%)

   Severe

129 (31.5%)

   Extreme

18 (4.4%)

How social activities restricted

   Not at all

28 (6.8%)

   A little

83 (20.3%)

   Moderately

119 (29.1%)

   Severely

133 (32.5%)

   Extremely

46 (11.2%)

Ab-I*

25.46 (4.53)

Ab-A*

19.59 (5.30)

Ab-P^

11.53 (4.23)