Dr Hoogenraad and Dr Mitchell comment

Comment: Understanding OR, PS and DR

We congratulate Kang and Schafer (KS) on their excellent article comparing various estimators of a population mean in the presence of missing data, and thank the Editor for organizing the discussion. In this communication, we systematically examine the propensity score (PS) and the outcome regression (OR) approaches and doubly robust (DR) estimation, which are all discussed by KS. The aim is to...

Dr Google or Dr Lazy?

Sir, I was recently on call for nephrology, and something happened. I was rung by a first year junior doctor at 1 am, saying that a patient's 'MEWS score was 6'. The patient had had a renal transplant that day. A score of 6 is very high. It should trigger a rapid senior review, and possible intensive care re-ferral. Modified early warning score (MEWS) is an electronic early warning score based ...

Dr. Wallace and Dr. Stone reply.

PATHOLOGY OF THE CARDIOVASCULAR SYSTEM Dr: Khitam Dr: Sazan Dr: Kifah Dr amear

BLOOD VESSEL DISEASES Blood vessels have a primary function of nourishing various organs and tissues of the body by supplying them with blood. Vascular diseases are manifested clinically through three mechanisms that are reflected through the diseased vessel (s) as 1. Progressive narrowing of the lumen associated with progressive ischemia of the relevant tissues. 2. Thrombosis associated with p...

interview with dr. cheginizadeh and dr. zahrani

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