Table 1.
Study characteristics and descriptive statistics.
| Study | Country | Sample | Coded as | n | % female | Mean age | TAS-20 total (SD) | LEAS-20 total (SD) |
|---|---|---|---|---|---|---|---|---|
| *Baker et al., 2014 | Australia | Functional voice disorder HC |
Psychiatric | 20 20 |
100 | 39 | X | 76.2 (9.8) 80.8 (7.7) |
| *Baeza-Velasco et al., 2012 | France | Musculoskeletal disorders HC |
Medical | 39 22 |
100 | 53 | 48.7 (11.5) 39.7 (12.7) |
53.4 (7.1) 54.8 (6.2) |
| Burger et al., 2016+ | USA | Chronic musculoskeletal pain | Medical | 72 | 79 | 49 | 50.8 (12.3) | 31.3 (5.2) |
| Bydlowski et al., 2005 | France | Eating disorders HC |
Psychiatric | 70 70 |
100 | 19 | 75.9 (11.3) 66.9 (10.9) |
61.0 (8.8) 66.4 (6.0) |
| *Carton et al., 2010 | France | Substance disorders | Psychiatric | 64 | 22 | 38 | 56.2 (11.7) | 50.0 (8.33) |
| Consoli et al., 2009 | France | Essential hypertension secondary hypertension | Medical | 73 25 |
55 48 |
53 52 |
52.4 (11.6) 48.4 (12.1) |
46.2 (11.5) 52.8 (8.4) |
| Igarashi et al., 2011 | Japan | University students | Healthy | 344 | 65 | 20 | 44.1 (9.4) | 50.0 (9.38) |
| Lane et al., 1998b | USA | Healthy participants | Healthy | 380 | 52 | X | X | X |
| *Lane et al., 2015a+ | USA | Somatic symptom disorders Mixed medical conditions |
Psychiatric Medical |
59 30 |
85 67 |
43 45 |
51.81 (13.1) 44.45 (12.7) |
32.8 (4.28) 32.3 (4.85) |
| Lichev et al., 2014+ | Germany | Healthy participants | Healthy | 84 | 46 | 24 | 46.7 (10.1) | 36.1 (5.1) |
| Lundh et al., 2002 | Sweden | Healthy participants | Healthy | 78 | 83 | 28 | 42.0 (9.1) | 68.3 (8.9) |
| Lumley et al., 2005 | USA | Healthy participants | Healthy | 140 | 75 | 20 | 44.10 (10.3) | 62.70 (8.43) |
| Maroti et al., 2017+ | Sweden | Chronic fatigue HC |
Medical | 65 30 | 81 | 43 | 45.5 (11.4) 33.5 (6.4) |
29.5 (5.4) 34.7 (6.9) |
| *Neumann et al., 2017+ | USA | Traumatic brain injury | Medical | 24 | 24 | 46 | 61.54 (7.26) | 36.9 (7.9) |
| Parling et al., 2010 | Sweden | Anorexia Nervosa HC |
Psychiatric | 35 35 |
100 | 22 | 55.8 (12.2) 43.3 (10.1) |
62.8 (6.3) 62.4 (8.1) |
| *Pietri and Bonett, 2016 | France | Mixed (Victims of domestic violence+HC) |
Not included in sub-group analysis | 80 | 100 | 35 | X | X |
| Simson et al., 2002+ | Germany | Mixed psychiatric | Psychiatric | 146 | 73 | 31 | 55.2 (10.5) | 24.4 (5.2) |
| Subic-Wrana et al., 2001+ | Germany | University students | Healthy | 338 | 52 | X | X | 30.4 (6.0) |
| Subic-Wrana et al., 2005+ | Germany | Mixed psychiatric | Psychiatric | 386 | 72 | 41 | X | X |
| Suslow et al., 2000 | Germany | Mixed (Psychiatric+HC) | Not included in sub-group analysis | 68 | 56 | 28 | 45.9 (13.6) | 62.2 (10.4) |
| Waller and Scheidt, 2004++ | Germany | Somatoform disorder HC |
Psychiatric | 40 20 |
50 | 43 | 46.6 (8.9) 35.6 (8.9) |
2.7 (0.5) 2.7 (0.4) |
+
, Used LEAS-10 (instead of LEAS-20).
++
In this study the authors seem to have divided the total score of LEAS-10 with 10. X, missing data.
*
indicates articles those corresponding authors send additional data for correlations analysis.