Table 2. Distribution of Physical Illnesses among Cases with Short-Term Mortality and Controls.
| Characteristics, n (%) | Pre-existing illnessa | Incident physical illnessb | Prevalent physical illnessc | ||||||
| Case (n = 128) | Controls (n = 468) | pd | Case (n = 128) | Controls (n = 468) | pd | Case (n = 128) | Controls (n = 468) | pd | |
| Cardiovascular disease | |||||||||
| Arrhythmia | 9 (7.0) | 8 (1.7)* | <0.01 | 8 (6.3) | 5 (1.1)* | <0.01 | 17 (13.3) | 13 (2.8)** | <0.001 |
| Heart failure | 6 (4.7) | 11 (2.4) | ns | 6 (4.7) | 5 (1.1)+ | 0.0119 | 12 (9.4) | 16 (3.4)* | <0.01 |
| Acute myocardial infarction | 1 (0.8) | 1 (0.2) | ns | 2 (1.6) | 1 (0.2) | ns | 3 (2.3) | 2 (0.4) | ns |
| Coronary heart diseases | 8 (6.3) | 32 (6.8) | ns | 2 (1.6) | 12 (2.6) | ns | 10 (7.8) | 44 (9.4) | ns |
| Hypertension | 22 (17.2) | 86 (18.4) | ns | 1 (0.8) | 12 (2.6) | ns | 23 (18.0) | 98 (20.9) | ns |
| Cancer | 20 (15.6) | 21 (4.5)** | <0.001 | 7 (5.5) | 15 (3.2) | ns | 27 (21.1) | 36 (7.7)** | <0.001 |
| Chronic hepatic disease | 20 (15.6) | 32 (6.8)* | <0.01 | 3 (2.3) | 10 (2.1) | ns | 23 (18.0) | 42 (9.0)* | <0.01 |
| Diabetes mellitus | 22 (17.2) | 63 (13.5) | ns | 7 (5.5) | 17 (3.6) | ns | 29 (22.7) | 79 (16.9) | ns |
| Cerebrovascular disease | 7 (5.5) | 34 (7.3) | ns | 7 (5.5) | 17 (3.6) | ns | 14 (10.9) | 51 (10.9) | ns |
| Asthma | 4 (3.1) | 19 (4.1) | ns | 1 (0.8) | 5 (1.1) | ns | 5 (3.9) | 24 (5.1) | ns |
| Delirium | 1 (0.8) | 3 (0.6) | ns | 0 | 0 | ns | 1 (0.8) | 3 (0.6) | ns |
a
Pre-existing physical illness: illness present within 180 days before hospitalization.
b
Incident physical illness: the illness newly appeared after hospitalization.
c
Prevalent physical illness: pre-existing and incident physical illnesses combined.
d
Estimated using univariate conditional logistic regression.
ns: not significant (p>0.01),
*
p<0.01,
**
p<0.001,
+
marginal statistical significance.