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Journal of Thai Traditional & Alternative Medicine Vol. 9 No. 2 September-December 2011 95

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‡ªìπ¿“…“‰∑¬ ‰¥â·°à ‡«Á∫‰´μå Med Plant (http://www.
Evidence-based Medicine (OCEBM)
medplant.mahidol.ac.th/index.asp) ‚¥¬ ”π—°ß“π¢âÕ¡Ÿ≈

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A 1 o SR ¢Õß°“√»÷°…“√Ÿª·∫∫ RCT ∑’Ë·μà≈–°“√»÷°…“„Àâº≈‰ª„π·π«‡¥’¬«°—π
o ß“π«‘®—¬√Ÿª·∫∫ RCT ∑’Ë¡’™à«ß§«“¡‡™◊ËÕ¡—Ëπ∑“ß ∂‘μ‘ (confidence interval; CI) ·§∫
B 2 o SR ¢Õß°“√»÷°…“·∫∫ cohort ∑’Ë·μà≈–°“√»÷°…“„Àâº≈‰ª„π·π«‡¥’¬«°—π
o ß“π«‘®—¬√Ÿª·∫∫ RCT ∑’Ë¥âÕ¬§ÿ≥¿“æ (μ‘¥μ“¡º≈‰¥âπâÕ¬°«à“√âÕ¬≈– 80) ·≈–°“√»÷°…“·∫∫ cohort
o ß“π«‘®—¬‡™‘ߺ≈≈—æ∏å (outcome research)
3 o SR ¢Õß°“√»÷°…“·∫∫ case-control ∑’Ë·μà≈–°“√»÷°…“„Àâº≈‰ª„π·π«‡¥’¬«°—π
o ß“π«‘®—¬∑’Ë¡’°“√»÷°…“·∫∫ case-control
C 4 o ß“π«‘®—¬√Ÿª·∫∫ case-series
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À¡“¬‡Àμÿ (1) ¥—¥·ª≈ß®“° Oxford Centre for Evidence-based Medicine Levels of Evidence (March 2009)
(2) „π°“√ª√–‡¡‘πÕ“®¡’°“√‡μ‘¡‡§√◊ËÕßÀ¡“¬ ç-é μàÕ∑⓬√–¥—∫¢ÕßÀ≈—°∞“π ‡¡◊ËÕÀ≈—°∞“ππ—Èπ¡’ CI °«â“ß À√◊Õ‡ªìπ SR ∑’Ëæ∫«à“ß“π«‘®—¬∑’Ë
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π”¡“∑∫∑«ππ—Èπ¡’§«“¡‰¡à‡¢â“°—πÕ¬Ÿà ∑”„Àâ‰¡à “¡“√∂ √ÿªº≈‰¥â „π°√≥’π’È®–®—¥«à“¡’√–¥—∫¢Õߧ”·π–π”‡∑à“°—∫√–¥—∫ D
(3) SR À¡“¬∂÷ß systematic review
(4) RCT À¡“¬∂÷ß randomized controlled trial