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Table 6 Characteristics of the patients included in the meta-analysis

From: A meta-analysis of the efficacy of fibromyalgia treatment according to level of care

  Total % Control group % Intervention group %
Level of care       
Primary care 4505 57.8 2127 57.6 2378 58.1
Specialised care 3284 42.2 1567 42.4 1717 41.9
Overall 7789 100.0 3694 100.0 4095 100.0
Kind of treatment       
Pharmacological 5706 73.3 2684 72.7 3022 73.8
Non-pharmacological 2083 26.7 1010 27.3 1073 26.2
Overall 7789 100.0 3694 100.0 4095 100.0
Outcome assessed       
Anxiety/depression 1195 15.3 570 15.4 625 15.3
Quality of life 115 1.5 51 1.4 64 1.6
Pain 2074 26.6 980 26.5 1094 26.7
Fatigue 650 8.3 320 8.7 330 8.1
Tender points 1533 19.7 738 20.0 795 19.4
Insomnia 397 5.1 196 5.3 201 4.9
Global function 1825 23.4 839 22.7 986 24.1
Overall 7789 100.0 3694 100.0 4095 100.0
Methodological quality       
1 to 2 595 7.6 289 7.8 306 7.5
3 to 4 3396 43.6 1577 42.7 1819 44.4
5 to 6 3798 48.8 1828 49.5 1970 48.1
Overall 7789 100.0 3694 100.0 4095 100.0
Length of treatment (weeks)       
0 to 8 3644 46.8 1750 47.4 1894 46.3
09 to 16 3467 44.5 1678 45.4 1789 43.7
17 to 24 678 8.7 266 7.2 412 10.1
Overall 7789 100.0 3694 100.0 4095 100.0
Age       
30 to 39 253 3.2 125 3.4 128 3.1
40 to 49 6662 85.5 3140 85.0 3522 86.0
50 to 59 874 11.2 429 11.6 445 10.9
Overall 7789 100.0 3694 100.0 4095 100.0
Percentage of women       
< 80 151 1.9 73 2.0 78 1.9
80 to 89 2258 29.0 1111 30.1 1147 28.0
90 to 99 2874 36.9 1297 35.1 1577 38.5
100 2506 32.2 1213 32.8 1293 31.6
Overall 7789 100.0 3694 100.0 4095 100.0
Duration of the disorder (years)       
0 to 5 1459 25.3 710 26.3 749 24.5
6 to 10 2987 51.9 1344 49.7 1643 53.8
11 to 15 1310 22.8 649 24.0 661 21.7
Overall 5756 100.0 2703 100.0 3053 100.0
Country       
Germany 410 5.3 206 5.6 204 5.0
Belgium 459 5.9 216 5.8 243 5.9
Brasil 278 3.6 132 3.6 146 3.6
Canada 1655 21.2 737 20.0 918 22.4
Finland 488 6.3 240 6.5 248 6.1
Holland 174 2.2 86 2.3 88 2.1
Norway 195 2.5 102 2.8 93 2.3
Sweden 254 3.3 126 3.4 128 3.1
Switzerland 276 3.5 135 3.7 141 3.4
Turkey 298 3.8 148 4.0 150 3.7
USA 3302 42.4 1566 42.4 1736 42.4
Overall 7789 100.0 3694 100.0 4095 100.0
Year of publication       
1994 620 8.0 234 6.3 386 9.4
1995 178 2.3 86 2.3 92 2,.2
1996 1306 16.8 637 17.2 669 16.3
1997 38 0.5 18 0.5 20 0.5
1998 724 9.3 349 9.4 375 9.2
2000 207 2.7 102 2.8 105 2.6
2001 926 11.9 460 12.5 466 11.4
2002 780 10.0 372 10.1 408 10.0
2003 392 5.0 196 5.3 196 4.8
2004 1241 15.9 621 16.8 620 15.1
2005 1377 17.7 619 16.8 758 18.5
Overall 7789 100.0 3694 100.0 4095 100.0