Characteristics | Study 1056 (N = 748) | Study 1077 (N = 745) | ||
---|---|---|---|---|
 | n | % | n | % |
Gender | Â | Â | Â | Â |
    Male | 42 | 5.6 | 41 | 5.5 |
    Female | 706 | 94.4 | 704 | 94.5 |
Race | Â | Â | Â | Â |
    White | 675 | 90.2 | 678 | 91.0 |
    Black | 35 | 4.7 | 33 | 4.4 |
    Other | 38 | 5.1 | 34 | 4.6 |
 | N | Mean ± SD | N | Mean ± SD |
Age (years) | 748 | 48.8 ± 10.9 | 745 | 50.1 ± 11.4 |
Duration of FM Prior to Study Start (months) | 747 | 111.7 ± 95.0 | 745 | 120.2 ± 96.2 |
Number of Painful Tender Points a | 719 | 17.1 ± 1.6 | 723 | 16.9 ± 1.8 |
Baseline Mean Pain Score b | 748 | 7.1 ± 1.3 | 745 | 6.7 ± 1.3 |
Sleep Quality Scale b | 748 | 6.7 (1.7) | 745 | 6.2 (1.6) |
MOS Sleep Scales | Â | Â | Â | Â |
    Sleep Disturbance | 744 | 67.8 ± 23.4 | 740 | 60.0 ± 24.9 |
    Snoring | 726 | 40.6 ± 35.9 | 717 | 36.7 ± 34.6 |
    Awaken Short of Breath or with Headache | 744 | 37.6 ± 31.1 | 743 | 32.3 ± 32.0 |
    Quantity of Sleep | 747 | 5.4 ± 1.6 | 744 | 5.6 ± 1.6 |
    Sleep Adequacy | 745 | 20.6 ± 22.0 | 744 | 23.7 ± 23.2 |
    Somnolence | 743 | 50.3 ± 24.1 | 740 | 42.1 ± 23.1 |
    Sleep Problems Index (9-item) | 741 | 65.0 ± 16.3 | 736 | 58.3 ± 17.7 |