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็ฎๆ ๏ผ่ฐๆฅๅ ฅ้จโๅคไน ่ฏปๅฎ่ฟไธ่ฏพ็จไนๅ๏ผๆๅธๆไฝ ่ฝ็่งฃ่ฎกๅไธ่ฟ่ก่ฐๆฅ็่ฎธๅคๆน้ขใ ๅผๅงๆ้ๆฐๆฎไนๅๅฟ ้กปๅฎๆ็ไปปๅก๏ผไปฅๅๅจๆฐๆฎๆ้่ฟ็จไธญๅฟ ้กปๆง่ก็ไปปๅก๏ผๅไธ่ฝ็ๅฐๆฐๆฎๆ้็ปๆๅๅๅใ ไธ็จ่ฟๅบฆ่ฟ่ก็ป่ฎกๆฃ้ช็้่ฆๆงใๅชๆ้ขๅ ็กฎๅฎ็ๆๆฃ้ชใๆๆๅ ถไป้่ฆๆง็ๅผ่ฏ้ฝไป ไป ๆฏๆ่ฟฐๆง็ใ ๆข็ดขๆง็ๆฐๆฎๅๆ๏ผEDA๏ผๆฏๅฏนๆๅบๆฐ็ๅ่ฏด้ๅธธๆไปทๅผ็ๅทฅๅ ทใๅฎ็ๅ็ฐไธ่ฝ่ขซๆฃ้ช๏ผๅฆๅๆดไธช็ ็ฉถ็้่ฆๆงไผ่ขซไธฅ้ๅจๆใ ๅ่ไนฆ็ฎไธญๆๅไนไนฆๅฏไธบๆๅๅฐ่ฟ่ก่ฐๆฅ็ ็ฉถๆไพๆ็จไฟกๆฏใ ๅ่ไนฆ็ฎ๏ผ่ฐๆฅๅ ฅ้จ Abramson J.H. 1990 Survey methods in community medicine: epidemiological studies, programme evaluation, clinical trials.ย Cartwright A. 1983 Health survey in practive and in potential.ย Cochran W.G. 1977 Sampling techniques.ย Communicale Disease Centre 1965 Attribute sampling method for local health departments.ย Fowler F.J. 1986 Reducing interviewer effects in health survey data.ย Horwood M.P. 1921 Public health surveys.ย Hyattsville M.D. 1977 Experiments in interviewing techniques.ย Kish L. 1965 Survey Sampling.ย Levi P.S., Lemeshow S. 1980 Sampling for the health professional.ย Lutz W. 1992 Health and community surveys.ย Lwanga S.K. Lemeshow S. 1991 Sample size determination in health studies.ย Streiner D. 1989 Health measurement scales.ย Sudman S. 1980 Health care surveys using diaries.ย Warwick D.P.,Lininger C.A. 1975 The sample survey: theory and practice.ย