Verification of a Motion Sensor for Evaluating Physical Activity in COPD Patients

Table 1

Characteristics.

	Study 1	Study 2
Age (years)	76.6 ± 6.9	73.0 ± 8.0
Gender (M/F) (n)	11/1	20/1
Smoking history
Pack-years	96.1 ± 47.5	56.7 ± 36.7
Curr/ex/non (n)	4/7/1	7/13/1
Body mass index	19.9 ± 2.5	20.4 ± 4.0
GOLD stage (I/II/III/IV) (n)	1/5/6/0	3/10/7/1
mMRC scale (0/1/2/3/4) (n)	1/4/1/6/0	6/9/3/3/0
Pulmonary function
FVC (L)	2.78 ± 0.60	2.92 ± 0.64
FEV1 (L)	1.43 ± 0.37	1.57 ± 0.52
FEV1/FVC (%)	51.7 ± 9.2	53.1 ± 8.6
FEV1% predicted (%)	57.6 ± 18.6	58.7 ± 19.0
Occupation (yes/no)	8/4	15/6

Farmer: 7; forestry: 2; fisherman: 1; driver: 1; carpenter: 1; concrete work: 1; iron industry: 1; clerical: 1; M: male; F: female; curr: current smoker; ex: ex-smoker; non: nonsmoker; GOLD: Global Initiative for Chronic Obstructive Lung Disease; mMRC: modified Medical Research Council; FVC: forced vital capacity; FEV1: forced expiratory volume in one second. Data are presented as means ± SD.