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An assessment of statistical errors of articles in the Journal of Korean Academy of Prosthodontics: Comparison between Korean version and English version

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ÃÖ¿ë±Ù ( Choi Yong-Geun ) - °í·Á´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø
±è¿µ¼ö ( Kim Young-Su ) - °í·Á´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø
½Å»ó¿Ï ( Shin Sang-Wan ) - °í·Á´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø °í±ÞÄ¡°úº¸Ã¶Çаú

Abstract

¿¬±¸¸ñÀû: ´ëÇÑÄ¡°úº¸Ã¶ÇÐȸÁö¿¡ »ç¿ëµÈ Åë°èÀû ¹æ¹ýÀÇ Åë°èÀû ¿À·ùÇöȲÀ» ÆľÇÇÏ¿© Åë°èÀû ¹æ¹ýÀÇ À߸øµÈ È°¿ëÀ¸·Î ÀÎÇÑ Ä¡ÀÇÇÐ ¿¬±¸³í¹®¿¡¼­ÀÇ ¹®Á¦¸¦ °ËÅäÇÏ°í, ¶ÇÇÑ Åë°èÀû ¿À·ùÀÇ À¯Çü°ú ºóµµ¸¦ ÆľÇÇÏ¿© µ¿ÀϹ®Á¦ÀÇ Àç¹ß ¹æÁö ¹× È¿À²Àû ´ëóÀÇ ±âȸ·Î »ï°íÀÚ ÇÔÀÌ´Ù.

¿¬±¸Àç·á ¹× ¹æ¹ý: 2000³âºÎÅÍ 2006³â±îÁöÀÇ ´ëÇÑÄ¡°úº¸Ã¶ÇÐȸÁö¿¡ °ÔÀçµÈ ÃÑ 399ÆíÀÇ ³í¹® Áß Åë°èÀû ¹æ¹ýÀÌ »ç¿ëµÈ 292ÆíÀÇ ³í¹®À» Á¶»çÇß°í, À̸¦ À§ÇØ 1997³â ±¹Á¦ÀÇÇÐÇмúÁö ÆíÁýÀ§¿øȸÀÇ¡°»ýÀÇÇÐ ÇмúÁö¿¡ Åõ°íÇÏ´Â ¿ø°íÀÇ ÅëÀϾç½ÄÀÇ Åë°èÇÐÀû ¹æ¹ý·Ð¿¡ °üÇÑ ¼­¼úÁöħ¡±15°³Ç×À» ±âÃÊ·Î ÇÏ¿© 1) Åë°è ÇÁ·Î±×·¥ÀÇ ºÒ¸í½Ã, 2) Åë°è ¹æ¹ýÀÇ ºÎÀûÀýÇÑ ±â¼ú, 3) Åë°è¿ë¾îÀÇ ¿À¿ë µîÀ¸·Î Å©°Ô 3°¡Áö ¹üÁÖ·Î ±¸¼ºµÈ Á¡°ËÇ¥¸¦ »ç¿ëÇÏ¿© Åë°èÀû ¹æ¹ýÀÇ Á¾·ù ¹× Åë°èÀû ¿À·ùºÎºÐÀ» È®ÀÎÇÏ°í À̸¦ ÇѱÛÆÇ°ú ¿µ¹®ÆÇÀ¸·Î ºñ±³ÇØ º¸¾Ò´Ù. ±× °á°ú´Â ´ÙÀ½°ú °°´Ù.

°á°ú ¹× °á·Ð: 1. Åë°è ÇÁ·Î±×·¥ ¸í½Ã ¿À·ù´Â ÇѱÛÆÇ¿¡¼± 54%°¡, ¿µ¹®ÆÇ¿¡¼± 59%°¡ ÀÖ¾úÀ¸³ª Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁø ¾Ê¾Ò´Ù (P = .66). 2. Åë°è ¹æ¹ýÀÇ ºÎÀûÀýÇÑ ±â¼ú¿¡ °üÇÑ ¿À·ù´Â ÇѱÛÆÇ¿¡¼± 49%°¡, ¿µ¹®ÆÇ¿¡¼± 33%°¡ ÀÖ¾úÀ¸³ª Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁø ¾Ê¾Ò´Ù (P = .09). 3. Åë°è¿ë¾îÀÇ ¿À¿ë ¿À·ù´Â ÇѱÛÆÇ¿¡¼± 54%°¡, ¿µ¹®ÆÇ¿¡¼± 24%°¡ ÀÖ¾úÀ¸¸ç Åë°èÀûÀ¸·Îµµ À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾ú´Ù (P = .01). »ó±â °á°ú·Î º¼ ¶§ Åë°è¿ë¾îÀÇ ¿À¿ë ¿À·ù ÀÌ¿Ü¿£ Åë°èÀû À¯ÀǼºÀ» º¸ÀÌÁø ¾Ê¾Æ¼­ ÇѱÛÆÇ°ú ¿µ¹®ÆÇÀÇ Åë°èÀû ¿À·ùÀÇ ºñÀ²Àº À¯»çÇÏ°Ô ³ªÅ¸³­ °É·Î ÃßÁ¤µÇ¸ç, ÀüüÀûÀ¸·Î ´ëÇÑÄ¡°úº¸Ã¶ÇÐȸÁöÀÇ Åë°èÀû Ÿ´ç¼ºÀº ´Ù¼Ò ºÎÁ·ÇÏ°Ô ³ªÅ¸³µ´Ù. µû¶ó¼­ ÇâÈÄ Ä¡ÀÇÇÐ ¿¬±¸ÀÚ´Â Åë°èÀû ¹æ¹ýÀ» ±â¼úÇÏ°í Àû¿ëÇÒ ¶§ Åë°èÀû ¿À·ù¸¦ ÇÇÇϱâ À§ÇØ ÁÖÀǸ¦ ±â¿ï¿©¾ß ÇÒ °ÍÀ̸ç, ¾Æ¿ï·¯ Ä¡ÀÇÇÐ ³í¹®¿¡¼­ÀÇ Åë°èÇÐÀû ¹æ¹ý·Ð¿¡ ´ëÇÑ ÀνÄÀÇ Á¦°í°¡ ÇÊ¿äÇÏ´Ù°í º¸ÀδÙ

Statement of problem: The aim of dental research is to advance scientific knowledge and leads to improvement in the treatment and prevention of dental disease. Utilizing an effective research design and adequate statistical methods are essential procedures ensuring that the results of researches are based on evidences. A research should utilize proper statistical methods without statistical errors; Otherwise, it could adversely affect clinical practice and future research.

Purpose: This study was made to investigate the statistical methods used in the Journal of Korean Academy of Prosthodontics (JKAP) and then to assess them for the statistical errors.

Material and Methods: Among the total of 399 articles in the JKAP published from 2000 to 2006, 292 articles using statistics were reviewed. The validity of the statistical methods used in them were assessed using a checklist based on the guideline for statistical reporting in the uniform requirements for manuscripts submitted to biomedical journals by International Committee of Medical Journal Editors. The checklist consisted of three categories of statistical errors: 1) Unspecified computer statistical packages, 2) Inadequate description of statistical methods, 3) Misuse of statistical terms. Then, the results were compared between the Korean version and the English version in the JKAP.

Results: Among the 212 articles using statistics in the Korean version, 115 articles (54%) and among the 80 articles using statistics in the English version, 47 articles (59%) were shown to have unspecified computer statistical packages without statistically significant difference (P = .66). Likewise, 101 articles (48%) in the Korean version and 25 articles (31%) in the English version were shown to have the inadequate description of statistical methods without statistically significant difference (P = .09). However, 114 articles (54%) in the Korean version and 19 articles (24%) in the English version were shown to have the misuse of statistical terms with statistically significant difference (P = .01).

Conclusion: Some of the articles in the JKAP had inadequate statistical validity, given the statistical errors identified in this assessment. Hence, dental researchers should be more careful when it comes to describing and applying statistical methods.

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statistical error;misuse of statistical method;statistics;research design;prosthodontics

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KCI
KoreaMed