Table 2 Characteristics of 1908 episodes with a positive and negative BAC
| Alcohol <10 mg/100 ml | Alcohol >10 mg/100 ml | |
| N = 1617 (85%) | N = 291 (15%) | |
| Gender (male)* | 948 (59%) | 251 (86%) |
| Mean age (SD)* | 58.85 (20.47) | 45.38 (17.63) |
| Ethnicity (British white) | 654 (40%) | 149 (51%) |
| Reason (ICD code) | N and % for each code | |
| External causes of morbidity (V01–Y98) | ||
| Road traffic accident (V01–99) | 43 (81%) | 10 (19%) |
| Other accidents (W00–X59) | 53 (62%) | 36 (38%) |
| Assault (X85–Y09) | 28 (57%) | 21 (43%) |
| Self-harm (X60–X84) | 23 (51%) | 22 (49%) |
| Diseases of the circulatory system (I00–I99) | ||
| Ischaemic heart disease (I20–I25) | 358 (90%) | 40 (10%) |
| Arrhythmic/conduct disorders (I44–I45) | 110 (95%) | 6 (5%) |
| Congestive cardiac failure (I50) | 69 (93%) | 5 (7%) |
| Myocardial infarction (I21) | 46 (94%) | 3 (6%) |
| Cerebral infarct/haemorrhage (I60–I64) | 67 (92%) | 6 (8%) |
| Other | 60 (91%) | 6 (9%) |
| Diseases of the respiratory system (J00–J99) | ||
| Chronic obstructive pulmonary disease (J43–J44) | 70 (96%) | 3 (4%) |
| Asthma (J45) | 51 (90%) | 6 (10%) |
| Bronchitis/emphysema (J40–J42) | 64 (97%) | 2 (3%) |
| Other | 85 (94%) | 6 (6%) |
| Diseases of the nervous system (G00–G99) | ||
| Paroxysmal disorders (epilepsy) (G40–G47) | 74 (88%) | 10 (12%) |
| Other | 16 (94%) | 1 (6%) |
| Mental and behavioural disorders (F00–F99) | ||
| Alcohol misuse (F10) | 4 (9%) | 41 (91%) |
| Drug misuse (F11–F19) | 13 (59%) | 9 (41%) |
| Acute confusional state (F04) | 5 (100%) | 0 (0%) |
| Other | 14 (78%) | 4 (22%) |
| Diseases of the digestive system (K00–K93) | ||
| Gastrointestinal bleed (K92.2) | 34 (77%) | 10 (23%) |
| Other | 65 (92%) | 6 (8%) |
| Other | ||
| Acute infection/sepsis (A00–B99) | 35 (88%) | 5 (12%) |
| Non-cardiac chest pain (R07) | 45 (76%) | 14 (24%) |
| Syncope (R53) | 32 (97%) | 1 (3%) |
| Obstetric/gynaecological (O00–O99) | 9 (90%) | 1 (10%) |
| Anaphylaxis (T78.2) | 20 (83%) | 4 (17%) |
| Miscellaneous | 124 (90%) | 13 (10%) |
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*p<0.01. BAC, blood alcohol concentration; ICD, International Classification of Diseases.
