Table 1 Definitions
From: High yield of culture-based diagnosis in a TB-endemic setting
Definition | Formula | |
|---|---|---|
Relative incremental yield of method* 1 vs method 2 (RY) | = | % positive per method 2 |
% positive per method 1 | ||
Absolute incremental yield of method 2 vs method 1 (AY) | = | % positive per method 2 - % positive per method 1 |
Number needed to diagnose one extra case of TB (NND) | = | 1 |
AY (in %) |