Table 4.
Differences in mental component scores between subgroups at all time points
| Mental component score | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Parameter | Range | % | Pre-morbid | 3 months | 6 months | 1 year | 2.5 years | 5 years | ||||||
| Age | ≤ 64 years | 184 (61) | 44.2 | (14.4) | 49.2 | (11.5) | 50.2 | (11.8) | 50.7 | (12.0) | 53.7 | (9.6) | 52.7 | (11.6) |
| > 64 years | 116 (39) | 47.2 | (12.6) | 53.2 | (10.7) | 56.7 | (8.6) | 56.0 | (8.4) | 55.1 | (8.6) | 56.5 | (11.6) | |
| P value | 0.06 | 0.02 | < 0.001 | 0.002 | 0.40 | 0.13 | ||||||||
| APACHE II | ≤ 18 | 158 (53) | 46.5 | (14.3) | 50.9 | (11.6) | 52.1 | (11.1) | 51.7 | (11.7) | 53.8 | (9.2) | 53.5 | (11.1) |
| > 18 | 142 (47) | 44.1 | (13.1) | 50.3 | (11.2) | 53.1 | (11.3) | 53.7 | (10.4) | 54.5 | (9.4) | 54.4 | (12.6) | |
| P value | 0.12 | 0.74 | 0.55 | 0.27 | 0.68 | 0.71 | ||||||||
| LOS | ≤ 2 days | 162 (54) | 45.9 | (13.7) | 51.2 | (11.9) | 53.1 | (11.3) | 51.2 | (12.0) | 53.8 | (9.1) | 54.9 | (10.6) |
| > 2 days | 136 (46) | 44.7 | (13.9) | 50.0 | (10.6) | 51.8 | (11.1) | 54.2 | (9.8) | 54.5 | (9.5) | 52.6 | (13.0) | |
| P value | 0.43 | 0.44 | 0.46 | 0.10 | 0.70 | 0.36 | ||||||||
|
Type of Admission |
Surgical | 106 (35) | 46.7 | (12.5) | 52.2 | (11.2) | 53.6 | (10.5) | 52.1 | (10.7) | 54.3 | (7.2) | 54.9 | (10.6) |
| Medical | 118 (39) | 43.1 | (13.8) | 49.5 | (12.3) | 51.6 | (12.8) | 54.1 | (11.4) | 54.1 | (10.5) | 53.8 | (14.0) | |
| P value | 0.04 | 0.17 | 0.32 | 0.35 | 0.94 | 0.70 | ||||||||
| Long-term survival | Survivor | 197 (66) | 47.9 | (12.7) | 53.1 | (9.4) | 53.5 | (9.6) | 53.2 | (10.1) | 54.9 | (8.5) | 53.9 | (11.7) |
| Non-survivor | 103 (34) | 44.0 | (14.2) | 48.1 | (12.6) | 51.2 | (12.9) | 51.1 | (13.2) | 50.8 | (11.8) | . | . | |
| P value | 0.016 | 0.002 | 0.196 | 0.338 | 0.117 | |||||||||
Data presented as means and standard deviations. All subgroups are dichotomised around the median values for all intensive care unit (ICU) admissions. APACHE = acute physiology, age and chronic health evaluation; LOS = length of stay.