Table 5.
Comparison of National Medical Register (ICD-9 codes*) and medical record research with regard to registered complications
| Complications | National Medical Register (LMR) | ||||||
|---|---|---|---|---|---|---|---|
| Medical record research | 052.0 N |
052.1 N |
052.7 N |
052.8 N |
052.9 N |
Total N |
Complication registered N (%) |
| Neurological | |||||||
| Cerebellitis, ataxia | 2 | - | 6 | - | 1 | 9 | 4 (44.4%) |
| Febrile convulsion | - | - | 2 | 2 | 18 | 22 | 17 (77.3%) |
| Convulsion without fever | - | - | - | - | 1 | 1 | 1 (100.0%) |
| Meningitis/encephalitis | - | - | 1 | 1 | 5 | 7 | 3 (42.9%) |
| Cerebral vasculitis/infart/bleeding | - | - | 1 | - | - | 1 | 1 (100.0%) |
| Lower respiratory tract | |||||||
| Pneumonia | - | 9 | 2 | 2 | 9 | 22 | 17 (77.3%) |
| Bronchitis or bronchiolitis | - | - | 1 | 1 | 4 | 6 | a 4 (66.7%) |
| Upper respiratory tract, ENT and eye | |||||||
| Otitis media | - | - | 4 | 1 | 11 | 16 | 6 (37.5%) |
| Faryngitis/tonsillitis | - | - | 1 | - | 9 | 10 | 5 (50.0%) |
| Conjunctivitis | - | - | 3 | - | 4 | 7 | 1 (14.3%) |
| Skin/subcutis | |||||||
| Bacterial super infections of skin lesions | - | - | 28 | 9 | 45 | 82 | b 50 (61.0%) |
| Staphylococcal scalded skin syndrome | - | - | - | - | 1 | 1 | 1 (100.0%) |
| Erythema multiforme exsudativum | - | - | - | - | 1 | 1 | 0 (0.0%) |
| Necrotizing fasciitis | - | - | - | 1 | - | 1 | 0 (0.0%) |
| Gastrointestinal tract | |||||||
| Gastroenteritis | - | 2 | 5 | 1 | 13 | 21 | 12 (57.1%) |
| Stomatitis | - | - | 2 | 1 | 10 | 13 | c 9 (69.2%) |
| (Imminent) dehydration | - | - | 8 | 4 | 45 | 57 | 26 (45.6%) |
| Liver disorder | - | 1 | - | 1 | - | 2 | 1 (50.0%) |
| Secondary bacterial infections | |||||||
| Sepsis | - | - | 2 | 1 | 3 | 6 | 1 (16.7%) |
| Osteomyelitis | - | - | 1 | - | - | 1 | 1 (100.0%) |
| Bacterial arthritis | - | - | 2 | - | 2 | 4 | 3 (75.0%) |
| Haematological/coagulation disorders | |||||||
| Thrombocytopenia | - | 1 | - | 1 | 3 | 5 | 1 (20.0%) |
| Coagulation disorder | - | - | - | 2 | 1 | 3 | 1 (33.3%) |
| Leuco- and/or erythrocytopenia/anaemia | - | 1 | 2 | 2 | 3 | 8 | 2 (25.0%) |
| Other complications | |||||||
| Reactive arthritis | - | - | - | - | 1 | 1 | 1 (100.0%) |
| Other | - | 1 | 4 | - | 10 | 15 | 10 (66.7%) |
| Total | 2 | 11 | 51 | 17 | 215 | 296 | |
* ICD-9 code: 052.0 = postvaricella encephalitis, 052.1 = varicella (hemorrhagic) pneumonitis, 052.7 = varicella with other specified complications, 052.8 = varicella with unspecified complication, 052.9 = varicella without complication
a acute upper respiratory infections registered in LMR were also included
b all bacterial infections (also when it was not clear that it concerned the skin) registered in LMR were included
c volume depletion disorder and feeding difficulties and mismanagement, registered in LMR were also included (except for patients for whom (imminent) dehydration was mentioned by the medical student as well)