Free powerpoints to
download on a range of subjects all submitted by teachers in biology, chemistry, physics, maths, geography, english, history, spanish, french, german and religion aimed at all levels.
To use hd - PS, a researcher
downloads the program from the Harvard site, connects it to one
of the data software packages widely used in epidemiology, and imports to the system a wide
range of health information
on each study
subject,
ranging from basics like blood pressure and age to smaller, more esoteric factors like whether the individual saw a doctor in the past six months.