The purpose of the NHANES (National Health and Nutrition Examination Survey) epidemiologic followup survey was to conduct a longitudinal study of 14,407 adults originally surveyed in 1971-75 and to investigate subsequent health and mortality outcomes. Respondents were traced and re-examined. Information was obtained from hospital records, the National Death Index, and death certificates. Several cycles have now been performed. The initial NHANES followup survey was completed in 1984. A continued followup of the elderly (75 years of age or older) in this cohort was conducted in 1985-86, while the entire cohort was again followed in 1986-87. Further followup in 1992 has been completed. The purpose of this intramural project is to examine the relation of chemopreventive, nutritional, and constitutional factors to cancer in the very large, representative populationThe new hardware packs many of the same features as the MacBook redesign released in 2009, including an LED-backlit display, polycarbonate unibody enclosure, and a built-in battery. The hardware also comes standard with 2GB of 1066MHz DDR3 RAM, a 250GB 5400 RPM hard drive, 1280x800 pixel widescreen display, and an 8x double-layer SuperDrive.

The new MacBook, with its updated processor and mobile graphics, is said to achieve up to 10 hours of uptime with its built-in battery. It also gets the improved, streamlined MagSafe connector found in the latest MacBook Pro models, which points the adapter cord backward rather than perpendicular from the body. The $999 hardware is available immediately.

The new MacBook was leaked over the weekend by a Vietnamese website that got their hands on the final model,