Table 3.
Completion rates of individual procedures separated by cohort and study visit
| Overall | Elective surgery | Emergency surgery | Medical | p value | ||
|---|---|---|---|---|---|---|
| Visit 1/Baseline | ||||||
|
Elective—preoperative assessment clinic Emergency surgery—preoperative (questionnaires may be postoperative) Medical—within 48 hours of admission |
Bioelectrical Impedance Analysis | 88.2% (60/68) | 91.7% (22/24) | 100% (3/3) | 85.4% (35/41) | 0.607 |
| Ultrasound quadriceps | 98.5% (67/68) | 100% (24/24) | 100% (3/3) | 97.6% (40/41) | 0.716 | |
| Handgrip strength | 100% (68/68) | 100% (24/24) | 100% (3/3) | 100% (41/41) | NA | |
| Gait speed | 81.5% (53/65) | 100% (24/24) | NA | 70.7% (29/41) | 0.003 | |
| Other physical performance tests | 83.1% (54/65) | 100% (24/24) | NA | 73.2% (30/41) | 0.005 | |
| PROMIS Physical Function | 98.8% (80/81) | 100% (24/24) | 93.8% (15/16) | 100% (41/41) | 0.128 | |
| Other questionnaires | 98.8% (80/81) | 100% (24/24) | 93.8% (15/16) | 100% (41/41) | 0.128 | |
| Venepuncture | 75% (51/68) | 100% (24/24) | 33.3% (1/3) | 63.4% (26/41) | 0.001 | |
| Visit 2 (surgical) | ||||||
|
Elective—within 48 h of surgery Emergency surgery—within 48 h of surgery |
Bioelectrical Impedance Analysis | 89.5% (34/38) | 87.0% (20/23) | 93.3% (14/15) | NA | 0.531 |
| Ultrasound quadriceps | 97.4% (37/38) | 95.7% (22/23) | 100% (15/15) | NA | 0.413 | |
| Handgrip strength | 89.5% (34/38) | 87.0% (20/23) | 93.3% (14/15) | NA | 0.531 | |
| Venepuncture | 65.8% (25/38) | 60.9% (14/23) | 73.3% (11/15) | NA | 0.429 | |
| Visit 3 (surgical)/Visit 2 (medical) | ||||||
|
Elective—7 (± 2) post-operative Emergency surgery—7 (± 2) days post-operative Medical—7 (± 2) days post-admission |
Mean (SD) days from visit 2 (surgery)/ visit 1 (medical) | 5.5 (1.2) | 5.4 (1.0) | 5.0 (1.4) | 5.8 (1.1) | 0.116 |
| Bioelectrical Impedance Analysis | 87.0% (60/69) | 86.4% (19/22) | 92.3% (12/13) | 85.3% (29/34) | 0.811 | |
| Ultrasound quadriceps | 100% (67/67) | 100% (22/22) | 100% (32/32) | 100% (13/13) | NA | |
| Handgrip strength | 98.5% (66/67) | 95.5% (21/22) | 100% (13/13) | 100% (32/32) | 0.354 | |
| Gait speed | 88.1% (59/67) | 86.4% (19/22) | 92.3% (12/13) | 87.5% (28/32) | 0.864 | |
| Other physical performance tests | 84.4% (27/32) | NA | NA | 84.4% (27/32) | NA | |
| PROMIS Physical Function | 94.1% (64/68) | 90.9% (20/22) | 100% (13/13) | 93.9% (31/33) | 0.542 | |
| Other questionnaires | 98.5% (67/68) | 95.5% (21/22) | 100% (13/13) | 100% (33/33) | 0.346 | |
| Fitbit data | 51.5% (35/68) | 54.5% (12/22) | 38.5% (5/13) | 54.5% (18/33) | 0.580 | |
| Visit 4 (surgical)/Visit 3 (medical) | ||||||
|
Elective—13 (± 1) weeks post-operative Emergency surgery—13 (± 1) weeks post-operative Medical—13 (± 1) weeks post-admission |
Mean (SD) days from visit 2 (surgery)/ visit 1 (medical) | 90.8 (7.6) | 89.6 (6.7) | 88.7 (2.9) | 93.0 (9.3) | 0.219 |
| Bioelectrical Impedance Analysis | 90.0% (36/40) | 94.1% (16/17) | 80.0% (8/10) | 92.3% (12/13) | 0.470 | |
| Ultrasound quadriceps | 100% (40/40) | 100% (17/17) | 100% (10/10) | 100% (13/13) | NA | |
| Handgrip strength | 100% (40/40) | 100% (17/17) | 100% (10/10) | 100% (13/13) | NA | |
| Gait speed | 100% (40/40) | 100% (17/17) | 100% (10/10) | 100% (13/13) | NA | |
| Other physical performance tests | 97.5% (39/40) | 100% (17/17) | 100% (10/10) | 92.3% (12/13) | 0.345 | |
| PROMIS Physical Function | 98.1% (53/54) | 100% (21/21) | 100% (10/10) | 95.7% (22/23) | 0.503 | |
| Other questionnaires | 98.1% (53/54) | 100% (21/21) | 100% (10/10) | 95.7% (22/23) | 0.532 | |