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79
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. 42, 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, No. 42, as the disease is insidious and of very
gradual onset in the majority of cases.
Family History.— This was investigated in 304
instances. In 180, or 59.2 per cent., a history of the
disease in one or more near relatives was obtained.
Sleeping Accommodation.— The following Table, No.
43, shows the sleeping arrangements of the cases in respect
of which this information was obtained.

* No informaiion as regards 138 out of 416 cases.
† No information as regards 118 out of 416 cases.
** In one of these cases patient slept in a shelter in the garden.