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Demographic Characteristics
| Group |
|||
|---|---|---|---|
| Variable | CLBP | Pain-free | P |
| Sample size | 162 | 158 | |
| Age | |||
| Mean | 73.6 | 73.5 | 0.87 |
| SD | 5.2 | 4.8 | |
| Gender | |||
| Male | 83 | 94 | 0.16 |
| Female | 80 | 66 | |
| Ethnicity | |||
| White | 141 | 142 | 0.82 |
| African American | 18 | 15 | |
| Hispanic | 3 | 4 | |
| BMI | |||
| Mean | 29.0 | 26.1 | <0.001 |
| SD | 4.5 | 3.8 | |
| Folstein MMSE | |||
| Mean | 28.3 | 28.7 | 0.01 |
| SD | 1.3 | 1.2 | |
| MPQ-SF total score | |||
| Mean | 11.6 | — | |
| SD | 8.1 | — | |
| Pain duration in yr | |||
| Mean | 14.2 | — | |
| SD | 14.6 | — | |
BMI indicates body mass index; MMSE, Mini-Mental State Examination.
