Sample Characteristics in those Eligible for the SF-36.

aInfectious causes included viral (Herpes simplex, Varicella zoster, measles and Epstein-Barr virus), bacterial (predominantly Mycobacterium tuberculosis) and dual bacterial-fungal infection. Immune-mediated causes included those associated with N-methyl-D-aspartate-receptor antibodies, voltage-gated potassium channel-complex antibodies, acute disseminated encephalomyelitis and one associated with a first presentation of multiple sclerosis.bThe NS-SEC three class categorisation was rated at admission and based on the occupation of the patient.cThe most common co-morbidities in those that completed the SF-36 were: hypertension (n = 11), hypercholesterolaemia (n = 5), asthma (n = 5) and thyroid disorder (n = 5). The most common co-morbidities in those that did not complete the SF-36 were: HIV co-infection (n = 9), hypertension (n = 7) and all cause cancer (n = 5).IQR = interquartile range, NS-SEC = National Statistics Socio-Economic Classification.