Table 1 Clinical details
Answered on all four occasions | Withdrawals between 6 and 36 months | Answered on 6 months | Non-responders | Alive 6 months after discharge | |||
|---|---|---|---|---|---|---|---|
Variable | (n = 478) | (n = 502) | P a | (n = 980) | (n = 683) | P b | (n = 1663) |
Male/female | 274/204 (57) | 292/210 (58) | 0.32 | 567/413 (58) | 357/326 (52) | 0.02 | 924/739 (55.6) |
Age (years) | 58.8 (17.0) | 57.6 (19.3) | 0.30 | 58.2 (18.2) | 57.7 (19.6) | 0.54 | 58.0 (18.8) |
APACHE II score | 15.3 (7.2) | 15.9 (8.1) | 0.22 | 15.6 (7.7) | 16.3 (7.6) | 0.04 | 15.9 (7.6) |
Stay in ICU (hours) | 126.6 (173.9) | 119.7 (161.9) | 0.52 | 123.1 (167.8) | 93.1 (105.5) | <0.001 | 110.9 (146.3) |
Stay in hospital (days) | 15.5 (20.1) | 14.6 (19.2) | 0.46 | 15.0 (19.6) | 14.8 (19.9) | 0.85 | 14.9 (19.9) |
Time on ventilator (hours | 68.1 (165.5) | 56.2 (142.4) | 0.23 | 62.0 (154.2) | 33.5 (81.6) | <0.001 | 50.2 (130.0) |
Diagnosis on admission to ICU | 0.80 | 0.02 | |||||
Multiple trauma | 57 (12) | 57 (11) | 117 (12) | 69 (10) | 186 (11) | ||
Sepsis | 37 (8) | 47 (9) | 82 (8) | 53 (8) | 135 (8) | ||
Gastrointestinal disease | 101 (21) | 100 (20) | 204 (21) | 104 (15) | 308 (18) | ||
Respiratory disease | 85 (18) | 112 (22) | 196 (20) | 147 (22) | 343 (21) | ||
Miscellaneous | 198 (41) | 186 (37) | 381 (39) | 309 (45) | 690 (42) | ||
Pre-existing diseases | 725 (74) | ||||||
Cancer | 116 (16) | ||||||
Diabetes | 131 (13) | ||||||
Cardiovascular | 203 (28) | ||||||
Gastrointestinal | 122 (17) | ||||||
Miscellaneous | 628 (64) | ||||||
Number of diseases | |||||||
0 | 256 (26.1) | ||||||
1 | 418 (42.7) | ||||||
2 | 190 (19.4) | ||||||
≥ 3 | 116 (11.8) |