 A text book of the day went into more detail about personality changes, suggesting that they always occurred to greater or lesser extent and left the patient with diminished judgement, childish behaviour, carelessness, loss of ambition, and generally living at a lower level than previously.There was also the possibility of intellectual deterioration.Overall in the Board of Control survey six per cent of patients had died (half of them directly as a result of the operation); 36 per cent had left hospital and 58 per cent remained in hospital (often described as quieter or easier to nurse).