Table 1 Time Invariant Variables at Baseline
Variable | Mean (SD) / Frequency (%) |
|---|---|
Age in years (n = 515) | 66.5 (9.0) |
Sex (n = 511) | |
Male | 200 (39) |
Female | 311 (61) |
Marital Status (n = 509) | |
Married or Common law | 353 (69) |
Widowed | 54 (11) |
Separated or Divorced or Single | 102 (20) |
Working Status (n = 510) | |
No | 375 (74) |
Yes | 135 (26) |
Annual Household Income (n = 471) | |
< $40 k | 168 (36) |
$40 k - $60 k | 122 (26) |
$60 k - $80 k | 60 (13) |
> $80 k | 121 (26) |
Education (n = 464) | |
< High school | 72 (16) |
High school | 144 (31) |
College/Technical | 136 (29) |
University degree undergraduate | 112 (24) |
Other | 37 (8) |
Ethnicity (n = 505) | |
North American | 309 (61) |
European | 134 (27) |
South Asian Indian Pakistani Bangladesh | 29 (6) |
Pacific Asian Chinese Japanese Korean | 17 (3) |
Other | 16 (3) |
Supplementary insurance (n = 459) | |
No | 148 (32) |
Yes | 311 (68) |
Expected pain 3 months after surgery (n = 502) | |
Not at all painful | 150 (30) |
Slightly painful | 238 (47) |
Moderately painful | 101 (20) |
Very painful | 13 (3) |
Expected limitation in usual activity 3 months after surgery (n = 501) | |
Not at all limited | 124 (25) |
Slightly limited | 246 (49) |
Moderately limited | 117 (23) |
Very limited | 14 (3) |
Urban or rural (n = 497) | |
Urban | 445 (86) |
Rural | 52 (10) |