Adopts the group sampling law to choose 434 example physical exam rural women to carry on the questionnaire survey, carries on statistics analysis.
Methods: Using the group sampling method, the investigation on the Nangtong nursing human resources for the Engaging System Nurses at Secon.
Methods: Adopting the methods of whole group sampling at random, study on 306 children aged 4-6 of 14 kindergartens in Jing an District of Shanghai.
