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89
Relationship Between Date of Notification and
Onset of Tuberculosis.—In the course of their visits the
health visitors made enquiries into this point, and the following
Table, No. 58, gives the results:—

The figures given above refer to the history as given
by the patient, or in the case of a child the parent. In
reality, they show the relationship between the date of notification
and the period when symptoms of ill-health first
attracted the patient's attention. There is little doubt,
however, that the date of onset is much more antecedent to
the date of notification than would appear from the above
Table, as the disease is insidious and of very gradual onset
in the majority of cases.
Family History.—This was investigated in 461
instances. In 217, or 47 per cent., a history of the disease
in one or more near relatives was obtained.
Sleeping Accommodation.—The following Table, No.
59, shews the sleeping arrangements of 433 cases in respect
of which this information was obtained.

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