Table 1.
Adjusted odds ratios for patients undergoing non-clinical transfer within 48 hours of critical care admission
| Adjusted odds ratio | 95% confidence interval | P value | |
|---|---|---|---|
| Sex | |||
| Male versus female | 1.00 | 0.87 to 1.16 | 0.95 |
| Age | See Figure 1 | < 0.001 | |
| Quintiles of IMD | |||
| 1 (least deprived) | 1 | - | 0.95 |
| 2 | 0.97 | 0.75 to 1.26 | |
| 3 | 0.99 | 0.77 to 1.28 | |
| 4 | 1.06 | 0.83 to 1.35 | |
| 5 (most deprived) | 0.98 | 0.77 to 1.25 | |
| Past medical history of one or more specified serious conditionsa | |||
| Yes versus no | 0.96 | 0.79 to 1.17 | 0.70 |
| Admission type | |||
| Unplanned local admission | 1 | - | < 0.001 |
| Planned local medical admission | 0.89 | 0.42 to 1.90 | |
| Planned local surgical admission | 0.33 | 0.16 to 0.68 | |
| Unplanned transfer in | 1.16 | 0.82 to 1.64 | |
| Planned transfer in | 1.84 | 1.31 to 2.59 | |
| Repatriation | 0.36 | 0.13 to 0.96 | |
| Surgical status | |||
| Nonsurgical | 1 | - | < 0.001 |
| Emergency/urgent | 0.49 | 0.38 to 0.64 | |
| Elective/scheduled | 0.23 | 0.12 to 0.42 | |
| Reason for admission by body system | |||
| Cardiovascular | 1 | - | < 0.001 |
| Respiratory | 1.00 | 0.80 to 1.25 | |
| Neurological | 1.51 | 1.17 to 1.94 | |
| Gastrointestinal | 0.81 | 0.61 to 1.06 | |
| Genitourinary including renal | 0.63 | 0.45 to 0.87 | |
| Haematological/immunological | 0.68 | 0.36 to 1.31 | |
| Endocrine, metabolic, thermoregulation and poisoning | 0.66 | 0.46 to 0.91 | |
| Musculoskeletal | 0.98 | 0.59 to 1.65 | |
| Dermatological | 1.12 | 0.57 to 2.22 | |
| ICNARC Physiology Score | See Figure 2 | < 0.001 | |
| Month of admission to critical care | |||
| January | 1 | - | 0.003 |
| February | 0.70 | 0.51 to 0.95 | |
| March | 0.80 | 0.59 to 1.06 | |
| April | 0.71 | 0.53 to 0.97 | |
| May | 0.68 | 0.50 to 0.92 | |
| June | 0.55 | 0.40 to 0.77 | |
| July | 0.50 | 0.35 to 0.72 | |
| August | 0.73 | 0.53 to 1.00 | |
| September | 0.54 | 0.38 to 0.77 | |
| October | 0.61 | 0.44 to 0.86 | |
| November | 0.61 | 0.43 to 0.85 | |
| December | 0.80 | 0.59 to 1.08 | |
| Time of admission to critical care | |||
| 07:00 to 18:59 | 1 | - | 0.24 |
| 19:00 to 23:59 | 0.86 | 0.72 to 1.03 | |
| 00:00 to 06:59 | 0.93 | 0.78 to 1.11 | |
| Number of beds in referring critical care unit | 0.96 | 0.94 to 0.98 | < 0.001 |
ICNARC, Intensive Care National Audit and Research Centre; IMD, Index of Multiple Deprivation. aThe conditions included in the variable 'past medical history of one or more specified serious conditions' are: biopsy-proven cirrhosis, portal hypertension, hepatic encephalopathy, very severe cardiovascular disease (New York Heart Association functional class IV), severe respiratory disease (permanent shortness of breath with light activity), home ventilation, chronic renal replacement therapy, AIDS, daily high-dose steroid treatment, radiotherapy, chemotherapy, metastatic disease, acute/chronic myelogenous/lymphocytic leukaemia or multiple myeloma, lymphoma, or congenital immunohumoral or cellular immune deficiency state.