Table 2.
Summary of remote data measurements during the 3-week study period
| Non-smoking controls (n=11) |
PRISm (n=15) |
Smoking controls (n=72) |
GOLD 1 (n=9) |
GOLD 2 (n=36) |
GOLD 3 (n=24) |
GOLD 4 (n=13) |
P value | |
| Physical activity | ||||||||
| Median [IQR] steps per day* | 5038 [3744–5721] | 3156 [2198–4036] | 5585 [3429–8784] | 2182 [1601–7144] | 2338 [1437–4608] | 1420 [870–3753] | 544 [321–1249] | <0.001 |
| Median [IQR] calories per day* | 2074 [1615–2387] | 1521 [1147–2427] | 1896 [1509–2333] | 1447 [1020–1633] | 1952 [1364–2238] | 1625 [1232–1938] | 1190 [735–1308] | 0.006 |
| Mean PROactive Rasch Difficulty Score | 98 (4.1) | 85.9 (17.8) | 87.3 (12.3) | 76.5 (11.7) | 70.9 (16.3) | 74.6 (13.4) | 63 (14.5) | <0.001 |
| Daily symptoms | ||||||||
| Mean E-RS:COPD Total Score | 3.9 (1.6) | 8.4 (6.6) | 7.2 (4.2) | 9.9 (4.1) | 11.1 (5.5) | 11.8 (6.6) | 15.8 (6) | <0.001 |
| EXACT-defined events | 0 (0%) | 1 (7%) | 1 (1%) | 1 (11%) | 3 (8%) | 2 (8%) | 1 (8%) | 0.550 |
| Rescue medication | n/a | (n=2) | (n=9) | (n=2) | (n=22) | (n=15) | (n=8) | |
| Mean rescue inhaler use (occasions per day) | n/a | 0.1 (0.1) | 0.7 (1.0) | 0.2 (0.1) | 1.3 (1.7) | 2.5 (2.5) | 1.6 (1.7) | 0.150 |
Higher PROactive Rasch Difficulty score means less difficulty (0-100 scale).
*Steps and calories based on participants with ≥7 days with 8 or more hours of wear time.
E-RS:COPD, evaluating respiratory symptoms in chronic obstructive pulmonary disease; EXACT, EXAcerbations of Chronic pulmonary disease Tool; GOLD, Global Initiative for Chronic Obstructive Lung Disease; IQR, Inter-quartile range.