Comparison of Number of sputum samples required to detect one additional TB case on 2nd and 3rd sputum culture versus TB expert critical values.

LJ (Solid culture) = Lowenstein Jensen, MGIT (Liquid culture) = Mycobacterium Growth Indicator Tube.1Derek Armstrong, 2Richard Oatis, 3John Kenneth 4∼Armand Van Deun, 5Nicole Parrish;Order has no superiority meaning.∼ = the third sample was not necessary and could not recommend for it to be examined.CI = Confidence Interval.a = 1/Px*170, b = 1/NPx +positive missed by second*170 and c = 1/NNP + positive missed by third * 170, µ = Expert opinion Critical value for the second and third sputum sample culture.

LJ培养基（固体培养（Solid culture），Lowenstein Jensen）即罗文斯坦-詹森培养基；MGIT（液体培养（Liquid culture），Mycobacterium Growth Indicator Tube）即分枝杆菌生长指示管。1. 德里克·阿姆斯特朗（Derek Armstrong）、2. 理查德·奥蒂斯（Richard Oatis）、3. 约翰·肯尼思（John Kenneth）、4. 阿尔芒·范德恩（Armand Van Deun）、5. 妮可·帕里什（Nicole Parrish）；署名序号无优劣之分。注：波浪号（∼）的含义为：第三份样本无送检必要，不推荐对其开展检测。置信区间（Confidence Interval，CI）。计算公式：a = 170/Pₓ，b = 170/NPₓ + 170×第二份样本漏检阳性数，c = 170/NNP + 170×第三份样本漏检阳性数；μ为专家判定的第二、三份痰标本培养临界值。