Table 1.

Statistical parameters of different stains used for detecting of Pneumocystis jirovecii

Method	No. of PSa/TPSb	No. of NSc/TNSd	SEN (%)e	SPEC (%)f	PPV (%)j	NPV (%)h	Time consumed (min)	Cost consumed ($)
GMS	50/50	20/20	100	100	100	100	90	3.5
G	42/50	18/20	84	90	95.4	69.2	25	2
TB0	48/50	20/20	96	100	100	90.9	20	2.5

^aPositive slides detected by methods

^bTrue positive samples

^cNegative slides detected by methods

^dTrue negative samples

^eSensitivity (measures the proportion of positives that are correctly identified)

^fSpecificity (measures the proportion of negatives that are correctly identified)

^jPositive predictive value (is the probability that subjects with a positive screening test truly are positive)

^hNegative predictive value (is the probability that subjects with a positive screening test truly are positive)