For static panel data models that include endogenous time-invariant variables correlated with individual effects, exogenous averages over time of time-varying can be internal instruments. To pretest their exogeneity, we first estimate a random effects model includes all (Mundlak, 1978; Krishnakumar, 2006). Internal instruments are then selected if parameter is statistically different from zero ...

Hematoma expansion occurs in up to 40% of intracerebral hemorrhage (ICH) patients within 6 hours from the onset. Stopping the expansion is one aim of randomized clinical studies, and an important clinical imperative. CT angiography (CTA) spot sign is a known marker, found in about 30% of patients. Ultraearly hematoma growth (uHG) (expressed as the ratio between hematoma volume [mL] and time [h]...

BACKGROUND In Saskatoon in 2002, as one of the key strategies for the in motion health promotion strategy, the Forever...in motion program was developed with the general goal of increasing opportunities for physical activity among older adults living in congregate housing. The three components of the program were a low-intensity exercise program, informal socialization and educational sessions....

BACKGROUND Nutrition education is not an integral part of either undergraduate or postgraduate medical education. Computer-based instruction on nutrition might be an attractive and appropriate tool to fill this gap. OBJECTIVE The study objective was to assess the degree to which computer-based instruction on nutrition improves factual knowledge and practice behavior of general practitioner (G...

This study investigated the effects of personalized instruction on the achievement and attitudes of Taiwanese students on two-step mathematics word problems. A total of 136 fourth-graders in a Taiwanese public school participated in the study. Subjects initially completed a Student Survey on which they chose their favorite foods, sports, stores, classmates, and other selections. The most popula...