“Can’t do, don’t do” N = 85 | “Can do, don’t do” N = 81 | “Can’t do, do do” N = 13 | “Can do, do do” N = 104 | Overall p-value | |
---|---|---|---|---|---|
Age, y | 64 (60/69) | 64 (58/67) | 56 (53/60)*† | 64 (58/68)‡ | 0.007 |
Male, N (%) | 63 (74) | 51 (63) | 7 (54) | 63 (61) | 0.180 |
BMI, kg/m2 | 24.9 (21.1/28.1) | 26.6 (22.8/29.4) | 24.0 (22.6/25.8) | 26.7 (22.6/29.2) | 0.110 |
Waist/Hip ratio | 0.98 (0.90/1.05) | 0.98 (0.93/1.02) | 0.93 (0.90/1.02) | 0.96 (0.89/1.01) | 0.250 |
Smoker, N (%) | 11 (13) | 25 (31)* | 2 (15) | 29 (28)* | 0.026 |
mMRC score | 3 (2/3) | 1 (1/2)* | 2 (1/3) | 1 (1/2)* †‡ | < 0.001 |
CAT score | 18 (14/23) | 14 (10/18)* | 19 (13/22) | 13 (8/19)* | < 0.001 |
Anxiety score | 5 (3/8) | 3 (2/6) | 7 (5/9) | 4.5 (2.0/8.0) | 0.080 |
Depression score | 6 (4/8) | 4 (2/6)* | 5 (2/8) | 3.5 (1.0/6.0)* | < 0.001 |
GOLD, N (%) | < 0.001 | ||||
I | 2 (2) | 6 (7) | 0 (0) | 17 (16)* | |
II | 11 (13) | 27 (33)* | 6 (46)* | 48 (46)* | |
III | 35 (41) | 36 (44) | 3 (23) | 29 (28)† | |
IV | 37 (44) | 12 (15)* | 4 (31) | 10 (10)*‡ | |
COPD Risk Group, N (%) | < 0.001 | ||||
A | 4 (5) | 16 (20)* | 1 (8) | 27 (26)* | |
B | 68 (80) | 54 (67) | 10 (77) | 60 (58)* | |
C | 1 (1) | 0 (0) | 0 (0) | 8 (8)*† | |
D | 12 (14) | 11 (14) | 2 (15) | 9 (9) | |
FEV1, % pred. | 31 (25/43) | 45 (34/65)* | 41 (29/56) | 58 (40.5/75.0)*† | < 0.001 |
RV/TLC, % | 63 (57/68) | 55 (45/65)* | 55 (46/62) | 52 (43/59)* | < 0.001 |
TLco, % pred. | 36 (28/45) | 47 (36/64)* | 43 (34/48) | 63 (46/78)*†‡ | < 0.001 |
PaO2, kPa | 8.6 (7.6/9.5) | 9.0 (8.4/10.1) | 9.3 (8.5/9.6) | 9.6 (8.8/10.5)* | < 0.001 |
PaCO2, kPa | 5.2 (4.7/5.7) | 5.0 (4.5/5.3)* | 5.0 (4.7/5.2) | 4.9 (4.6/5.4) | 0.047 |
SaO2, % | 93.7 (91.2/95.3) | 94.8 (93.3/96.0) | 94.8 (94.5/96.0) | 95.2 (93.7/96.5)* | 0.007 |
Number of comorbidities, N | 3 (2/5) | 3 (2/5) | 2 (1/2)*† | 2 (1.0/3.5)*† | < 0.001 |
Exacerbations in the previous year, N | 1 (0/2) | 0 (0/1) | 1 (0/2) | 0 (0/1)*‡ | < 0.001 |
Severe exacerbations in the previous year, N | 0 (0/1) | 0 (0/0)* | 0 (0/0) | 0 (0/0)* | 0.006 |
Frequent exacerbator, N (%) | 28 (33) | 20 (25) | 6 (46) | 14 (14)*‡ | 0.004 |
Survival time, days (N = 214) | 1550 (836/2268)a | 2115 (1599/2394)b | 2390 (1799/3019)c | 2279 (1944/2839)d*† | < 0.001 |
Retired person, N (%) | 64 (76) | 56 (70) | 7 (54) | 64 (62) | 0.130 |
6MWD, m | 300 (252/349) | 450 (390/510)* | 360 (300/375)† | 495 (444/562)*‡ | < 0.001 |
6MWD, % pred. | 57 (47/65) | 87 (77/95)* | 61 (56/65)† | 96 (95/107)*‡ | < 0.001 |
SpO2 after 6MWT, % | 87 (81/92) | 90 (85/93)* | 91 (87/95) | 92 (87/95)* | < 0.001 |
Steps per day, N | 2388 (1329/3357) | 3284 (2113/3864) | 6590 (6007/9258)*† | 7553 (5876/9819)*† | < 0.001 |