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96
Report of the Medical Officer of Health.
The results are best shown in the form of percentages of
nett cases as under :—
Dead.
54.5 per cent.
Advanced.
15.4 per cent.
Stationary.
6.8 per cent.
Improved.
23.3 per cent.
69.9 per cent.
30.1 per cent.
Table LIV. gives similar figures for the cases of inactive
Pulmonary Tuberculosis, all the years being shown together.

* The cause of death in these two was :—
(1) Killed in action in France, 1918.
(2) Influenza, 1919.
Most of these patients remain in a stationary condition and
the disease can generally be regarded as permanently arrested,
and incapable of further improvement. The patients are no
danger to others and are usually fit to earn their own living.
The two deaths which occurred were not due to Tuberculosis
(see footnote to Table).
As already stated, the earlier years of treatment are the
critical years, so that a study of results after, say, three years'
treatment, might be expected to give useful information. Bearing
this in mind, and with the further object of obtaining as
large figures as possible, it was decided to classify the results
according to the condition at the end of the third calendar year
of treatment, and so make the cases of one year comparable
with those of another year. The 1913 cases were taken on their
condition at the end of 1915, the 1914 cases on their condition