Mello et al evaluated patients for sputum smear negative pulmonary tuberculosis. They reported a CART model for patients with a chest X-ray showing changes typical for tuberculosis. The authors are from Federal University of Rio de Janeiro, Johns Hopkins University, and University of Sao Paulo.
Patient selection: sputum smear negative for acid-fast bacilli, chest X-ray typical for tuberculosis (TB), community with high prevalence of tuberculosis
Analysis: classification and regression tree (CART)
Parameters:
(1) age in years
(2) chest pain
(3) weight loss
(4) dyspnea
Age
Chest Pain
Weight Loss
Dyspnea
Percent TB
< 20
NA
NA
NA
11%
20-31
No
NA
NA
0%
32-60
No
NA
No
71%
32-60
No
NA
Yes
45%
> 60
No
NA
NA
14%
20-30
Yes
NA
NA
95%
>=31
Yes
No
NA
31%
>= 31
Yes
Yes
NA
68%
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