35. ÀÆÈÃËÀËÒÛÍ ÑÓÄÀËÃÀÀÍÛ ÕÝËÁÝЯ¯Ä
Descriptive Little is known-Identify cases, estimate
Studies about the disease frequency,
occurrence, or examine time trend
determinants of-Justify additional
the disease (analytic) studies to test
hypotheses
Analytic Enough is -Test specific etiologic
Studies known about hypotheses
the disease, -Justify additional studies
specific
-Suggest potential for
hypotheses can
disease prevention
be tested