Table 1 Descriptive statistics of study sample at baseline†(N = 189)
Variable | Mean | SD |
|---|---|---|
Age | 66.5 | 9.5 |
 Range | 34–85 | |
Comorbidities*, out of 14 presented | 1.1 | 1.5 |
 Range | 0–6 | |
BMI | 28.5 | 5.1 |
 Range | 11.8–40.0 | |
HOOS summary score (higher is better) | 69.8 | 24.1 |
 Range | 0–100 | |
MCS (SF36 mental component) (higher is better) | 44.9 | 8.1 |
 Range | 12.1–60.9 | |
Follow-up time in days | 308 | 146 |
 Range | 34–805 | |
Exercise (> 15 min; number of days per week, range 0–7) | ||
 Strenuous (heart beats rapidly) | 1.2 | 1.8 |
 Moderate (not exhausting) | 3.1 | 2.4 |
 Mild (minimal effort) | 4.6 | 2.4 |
| Â | Frequency | % |
|---|---|---|
Surgical approach | ||
 Anterolateral | 47 | 25 |
 Direct Lateral | 96 | 51 |
 Direct Anterior Arthroplasty | 41 | 22 |
 Missing | 5 | 3 |
Specific comorbidities* | ||
 Back pain | 98 | 52 |
 Arthritis | 173 | 92 |
 Asthma | 13 | 7 |
 Cancer—now or in the past | 22 | 12 |
 Depression | 29 | 15 |
 Diabetes | 12 | 6 |
 Heart disease | 16 | 8 |
 High blood pressure | 63 | 33 |
 Insomnia | 36 | 19 |
 Kidney disease | 4 | 2 |
 Liver disease | 0 | 0 |
 Lung disease | 3 | 2 |
 Stroke | 4 | 2 |
 Ulcer or stomach disease | 6 | 3 |
 Other | 41 | 22 |
Smoking status | ||
 Never Smoked | 98 | 52 |
 Used to Smoke | 75 | 40 |
 Currently Smoke | 13 | 7 |
 Missing | 3 | 2 |
Gender | ||
 Male | 92 | 49 |
 Female | 97 | 51 |
Marital status | ||
 Married | 124 | 66 |
 Widowed | 13 | 7 |
 Living with significant other | 11 | 6 |
 Single (never married) | 15 | 8 |
 Divorced/Separated | 22 | 12 |
 Civil Union/Domestic Partner | 4 | 2 |
Race | ||
 First Nations/Native Canadian | 2 | 1 |
 Asian | 5 | 3 |
 Black | 2 | 1 |
 White | 172 | 91 |
 Missing | 8 | 4 |
Hispanic ethnicity | ||
 Yes | 2 | 1 |
 No | 102 | 54 |
 Missing | 85 | 45 |
Work status | ||
 Currently working | 68 | 36 |
 On leave of absence | 5 | 3 |
 Retired (not due to ill health) | 95 | 50 |
 Disabled and/or retired because of ill health | 4 | 2 |
 Homemaker | 1 | 1 |
 Unemployed | 1 | 1 |
 Other | 15 | 8 |
Hours worked per week | ||
 Does not apply | 93 | 49 |
 Less than 20 h | 25 | 13 |
 20–29 h | 8 | 4 |
 30–39 h | 17 | 9 |
 40 or more hours | 42 | 22 |
 Missing | 4 | 2 |
Workers' compensation for current condition (on or planning to apply) | ||
 Yes | 1 | 1 |
 No | 180 | 95 |
 Missing | 8 | 4 |
Considering legal action for current condition | ||
 Yes | 2 | 1 |
 No | 177 | 94 |
 Missing | 10 | 5 |
Level of education | ||
 Less than high school | 8 | 4 |
 Graduated from high school or earned GED | 16 | 8 |
 Some college or technical school | 29 | 15 |
 Graduated from college | 53 | 28 |
 Postgraduate school or degree | 81 | 43 |
 Missing | 2 | 1 |