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Table 1 Study characteristics of included trials

From: Level of daily physical activity in individuals with COPD compared with healthy controls

Reference N (P/C) Mean Age (yrs±SD, P;C) Gender (Male/Female) (P/C) Variation in GOLD stage Measurement device Duration of study (days)
Coronado (2003) 25 (15/10) 67 ± 9; 57 ± 5 13:2; 4:6 1-4 Uni-axial accelerometer 1
Hernandes (2009) 70 (40/30) 66 ± 8;64 ± 7 18:22; 14:16 2-4 Tri-axial accelerometer 2
Lores (2006) 35 (23/12) 62 ± 7; 59 ± 7 20:3; 9:3 2-4 Tri-axial accelerometer 3
Pitta (2005) 75 (50/25) 64 ± 7; 66 ± 5 36:14; 17:8 1-4 Tri-axial accelerometer 2
Pitta (2008) 40 68 ± 7 21:19 1-4 Multisensor armband 2
Sandland (2005) 20 (10/10) nd nd 3 Uni-axial accelerometer 7
Schönhofer (1997) 50 (25/25) 56 ± 12; 53 ± 14 14:11; 14:11 2-3 Pedometer 7
Singh (2001) 20 (11/9) 66 ± 9; 59 ± 4 7:4; 5:4 3 Uni-axial accelerometer 2
Steele (2000) 47 66 ± 8 44:3 1-4 Tri-axial accelerometer 3
Steele (2003) 63 nd nd nd Accelerometer 3
Troosters (2010) 100 (70/30) 66 ± 9; 65 ± 7 58:12; 19:11 1-4 Multisensor armband 6-8
Walker (2008) 51 (33/18) 67 ± 8; 70 ± 6 17:16; 8:10 3 Uni-axial accelerometer 3
Watz (2008) 170 64 ± 6.6 128:42 1-4 Multisensor armband 5-6
  1. N = number of subjects, P = patients, C = controls, yrs = years, SD = standard deviation, nd = not described.