Sampling plan. AHS-2 is the Adventist Health Study 2. PsyMRS is the Psychosocial Manifestations of Religion Sub-study involving collection of questionnaire data. BioMRS is the Biological Manifestations of Religion Sub-study that includes assessment of biometrics, blood/saliva/urine markers, and memory/learning ability. Numbers are targets. For example, while our year one target for PsyMRS was 10 000, as August 2007, 11 004 were in the dataset