- As a result of enquiries to discover what particular noises in hospital were most worrying for patients, three surveys were undertaken in 1957/8, 1960 and 1973. This document compares the results of the three surveys. The general findings of this survey indicate that noise is probably a greater cause of distress to patients in hospitals in 1973 than it was in 1960. In general patients seem to be prepared to accept those noises which appear to be inevitable or beyond the control of the hospital, but this type of noise only accounts for about a quarter of all complaints. The rest of the noise can be divided into three main categories - noise made by equipment, by staff, and by patients and their visitors.