Does the FNA sperm retrieval failure prediction model work well for current NOA individuals undertaking risk screening before the operation? Model validation, high-risk population identification and potential alternative sperm retrieval exploration.

Background: Non-obstructive azoospermia (NOA), the severe type of male infertility. The objective of this study was to evaluate the predictive accuracy of a prediction model of sperm retrieval failure with fine needle aspiration (FNA).

Methods: This study involved 769 NOA patients (dataset 1) undertaking FNA and 140 NOA patients undertaking mTESE (dataset 2).

[The prediction value of modified early warning score grade for death of the patients in intensive care unit].

Objective: To study the prediction value and practicality of modified early warning score (MEWS) grade for death of the patients in intensive care unit (ICU).

Methods: According to the predetermined criteria, the clinical data of patients who were admitted to ICU during January 2005 to August 2006(patients with ICU stay exceeding 2 hours were enrolled for study) were collected, and MEWS grade and acute physiology and chronic evaluation II (APACHE II) scores were assessed (90 days as the end point of the observation period). MEWS and APACHE II's receiver operator characteristic (ROC) curve, and their predication index were calculated and compared.