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1) observational epidemiology¿¡¼ ¿Ö socioeconomic positionÀÌ Áß¿äÇѰ¡? Vitamin C and heart diseaseÀÇ »ç·Ê
1990³â ÃÊ¹Ý NEJM¿¡ ºñŸ¹ÎÀÌ °ü»óµ¿¸ÆÁúȯÀ» ¿¹¹æÇÒ ¼ö ÀÖ´Ù´Â ³í¹®ÀÌ ½Ç¸®¸é¼ ºñŸ¹ÎÀÇ ¿ªÇÒ¿¡ ´ëÇÑ °ü½ÉÀÌ °íÁ¶µÇ¾ú½À´Ï´Ù. ºñŸ¹ÎÀº ¸ðµç »ç¶÷µéÀÌ ¸Å¿ì ½±°Ô ¾òÀ» ¼ö ÀÖ°í º¹¿ëµµ ½±±â ¶§¹®¿¡, À̰ÍÀ» Æò¼Ò¿¡ º¹¿ëÇÏ¸é ¼±¸ À¯·´ÀÇ leading causes of deathÀÎ °ü»óµ¿¸ÆÁúȯ À§ÇèÀ» 30% Á¤µµ °¨¼Ò½Ãų ¼ö ÀÖ´Ù´Â ¿¬±¸°á°ú´Â °øÁߺ¸°Ç Ãø¸é¿¡¼µµ ¸Å¿ì Å« Àǹ̸¦ °®´Â ¸Å·ÂÀûÀÎ ¿¬±¸°á°ú¿´½À´Ï´Ù. ÀÌ·¯ÇÑ ¿¬±¸ °á°ú¸¦ ¹ÙÅÁÀ¸·Î ½ÇÁ¦·Î ºñŸ¹ÎÀÌ °ü»óµ¿¸ÆÁúȯ ¿¹¹æÈ¿°ú°¡ ÀÖ´ÂÁö¿¡ ´ëÇÑ RCT°¡ ¼öÇàµÇ¾ú½À´Ï´Ù. ÇÏÁö¸¸, ±× °á°ú´Â ºÎÁ¤ÀûÀÎ °ÍÀ̾ú½À´Ï´Ù. ºê¸®½ºÅç ¿¬±¸±×·ì(Lawlor, Ebrahim, Davey Smith)Àº ÀÌ¿Í °°Àº RCT¿Í °üÂû¿ªÇÐ ¿¬±¸ °á°úÀÇ Â÷À̰¡ »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥(ƯÈ÷ »ý¾ÖÀû »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥)ÀÇ º¸Á¤ ¿©ºÎ¿¡ ´Þ·Á ÀÖ´Ù°í »ý°¢À» ÇÏ¿´½À´Ï´Ù. ¼±¸ À¯·´ »ç¶÷¿¡¼´Â, ºñŸ¹Î ¼·Ã볪 ü³» ºñŸ¹ÎÀº »çȸ°æÁ¦Àû À§Ä¡¿Í inverse relationÀ» º¸ÀÌ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® Àִµ¥(¿ì¸® ³ª¶ó´Â ´Ù¸£°ÚÁö¿ä?), ÀÌ·¯ÇÑ ¾ç»óÀ» °í·ÁÇÏÁö ¾Ê°í ¿¬±¸ÇÒ ¶§, ¿¬±¸ÀÚ´Â ¿À·ù¿¡ ºüÁú ¼ö ÀÖ´Ù´Â °ÍÀÌÁö¿ä. ¾Æ·¡¿¡ ¼Ò°³ÇÏ´Â ³í¹®µéÀº ÀÌ¿¡ ´ëÇÑ Debate¸¦ ¼Ò°³ÇÑ °Íµé·Î¼, ÀÇÇבּ¸¿¡¼ »çȸ°æÁ¦Àû À§Ä¡, ƯÈ÷ »ý¾ÖÀû Ãø¸é¿¡¼ÀÇ »çȸ°æÁ¦Àû À§Ä¡°¡ ¿Ö Áß¿äÇÑÁö¸¦ Àϱú¿öÁÝ´Ï´Ù.
Khaw KT, Bingham S, Welch A, Luben R, Wareham N, Oakes S, Day N. Relation between plasma ascorbic acid and mortality in men and women in EPIC-Norforlk prospective study: a prospective population study. Lancet 2001;357:657-63.
Lawlor DA, Davey Smith G, Bruckdorfer KR, Kundu D, Ebrahim S. Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence? Lancet 2004;363:1724-27.
Khaw KT, Day N, Bingham S, Wareham N. Observational versus randomised trial evidence [letter]. Lancet 2004;364:August 28:753-4.
Lawlor DA, Davey Smith G, Bruckdorfer KR, Tilling K, Ebrahim S. Author's reply [letter]. Lancet 2004;364:August 28:754-5.
Lawlor DA, Ebrahim S, Kundu D, Bruckdorfer KR, Whincup PH, Davey Smith G. Vitamin C is not associated with coronary heart disease risk once life course socioeconomic position is taken into account: prospective findings from the British women's heart and health study. J Epidemiol Community Health 2005;91:1086-87.
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2) Socioeconomic position¿¡ ´ëÇÑ °³°ýÀû ³í¹®
¾Æ·¡ÀÇ ³í¹®µé(6°³)Àº »çȸ°æÁ¦Àû À§Ä¡¸¦ °³°ýÇϰí ÀÖ´Â ³í¹®µé·Î¼, ±³°ú¼ÀûÀÎ ±ÛµéÀÔ´Ï´Ù. »çȸ°æÁ¦Àû À§Ä¡¿Í °ü·ÃÇÏ¿© Àǹ®ÀÌ µå´Â ³»¿ëÀÌ ÀÖÀ¸¸é, ¾Æ·¡ÀÇ ³í¹®µéÀ» Âü°íÇÏ¸é µË´Ï´Ù. ÀÌµé ³í¹®µé Áß¿¡¼ ÃÖ±Ù¿¡ ³ª¿Â ±ÛµéÀ» Áß½ÉÀ¸·Î ¹ßÁ¦¸¦ Çϵµ·Ï ÇϰڽÀ´Ï´Ù. ¼ÒÈÇÏ¿©¾ß ÇÒ ºÐ·®ÀÌ ¸¹±â ¶§¹®¿¡, ¹ßÁ¦ÀÚ´Â 2¸íÀ̵Ç, Åä·ÐÀÚ´Â ¾ø½À´Ï´Ù.
Galobardes B, Shaw M, Lawlor DA, Lynch JW, Davey Smith G. Indicators of socioeconomic position (part 1). J Epidemiol Community Health 2006;60:7-12.
Galobardes B, Shaw M, Lawlor DA, Lynch JW, Davey Smith G. Indicators of socioeconomic position (part 2). J Epidemiol Community Health 2006;60:95-101.
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Lynch JW, Kaplan GA. Socioeconomic Position. In: Berkman LF, and Kawachi I. (eds.) Social Epidemiology. New York: Oxford University Press, 2000, pp.13-35.
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Berkman LF, Macintyre S. The measurement of social class in health studies: old measures and new formulations. In: Kogevinas M, Susser M, Boffetta P. (eds.) Social Inequalities and Cancer. Lyon: IARC, 1997, pp.51-64.
Krieger N, Williams DR, Moss NE. Measuring social class in US public health research: Concepts, methodologies and guidelines. Annu Rev Public Health 1997:18:341-78.
Liberatos P, Link BG, Kelsey JL. The measurement of social class in epidemiology. Epidemiol Rev 1988;10:87-121.
3) °¢°¢ÀÇ »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥´Â ¾î¶² Àǹ̸¦ Áö´Ï´Â°¡?
±³À°¼öÁØ, Á÷¾÷, ¼Òµæ¼öÁØ µîÀº »çȸ°èÃþ ¶Ç´Â »çȸ°æÁ¦Àû ¼öÁØ ÁöÇ¥·Î ÅëĪµË´Ï´Ù. ±×¸®°í, ¾î¶² °æ¿ì, À̸¦ ¼·Î ¹Ù²Ù¾î »ç¿ëÇϱ⵵ ÇÕ´Ï´Ù. ¾Æ·¡ÀÇ ³í¹®µéÀº À̵é ÁöÇ¥µéÀÌ °¢°¢ ¾î¶² Ãø¸éÀÇ Àǹ̸¦ °¡Áö°í ÀÖ´ÂÁö¿¡ ´ëÇÑ ±³ÈÆÀ» ÁÝ´Ï´Ù.
Macintyre S, McKay L, Der G, Hiscock R. Socio-economic position and health: what you observe depends on how you measure it. J Public Health Med 2003;25(4):288-294.
Davey Smith G, Hart C, Hole D, et al. Education and occupational social class: which is the more important indicator of mortality risk? J Epidemiol Community Health 1998;52:153-60.
Khang YH, Kim HR. Relationship of education, occupation, and income with mortality in a representative longitudinal study of South Korea. Eur J Epidemiol 2005;20(3):217-20.
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4) »çȸ°è±Þ: social class
±³À°, Á÷¾÷, ¼ÒµæÀº ¸ðµÎ º£¹öÁÖÀÇÀÇ ÀüÅë¼Ó¿¡ ÀÖ´Â »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥ÀÔ´Ï´Ù. ±×·±µ¥, »çȸ°æÁ¦Àû À§Ä¡¿Í »çȸ°è±ÞÀº È¥¿ëÇÏ¿© ¾²À̱⵵ ÇÕ´Ï´Ù. ÇÏÁö¸¸, »çȸ°è±ÞÀº À̵é°ú´Â ºÐ¸í ±¸º°µÇ´Â ÁöÇ¥¶ó°í ÇÒ ¼ö ÀÖ½À´Ï´Ù. »çȸ°è±Þ(¿¹¸¦ µé¾î, WrightÀÇ »çȸ°è±Þ)À» ÁöÇ¥·Î ÇÑ ¿¬±¸ÀÇ ¾çÀº »ó´ëÀûÀ¸·Î Àû½À´Ï´Ù. ¾Æ·¡¿¡¼´Â À̸¦ ÁöÇ¥·Î ÇÑ ¿¬±¸µéÀ» º¸°Ô µË´Ï´Ù.
Muntaner C, Borrell C, Benach J, Pasarin MI, Fernandez E. The associations of social class and social stratification with patterns of general and mental health in a Spanish population. Int J Epidemiol 2003;32:950-58.
Wohlfarth T, van den Brink W. Social class and substance use disorders: the value of social class as distinct from socioeconomic status. Soc Sci Med 1998;47:51-58.
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5) Áö¿ªÀÇ »çȸ°æÁ¦Àû À§Ä¡
°³ÀδÜÀ§°¡ ¾Æ´Ñ Áö¿ª ´ÜÀ§ À§Çè¿äÀÎÀÌ °Ç°¿¡ ¿µÇâÀ» ¹ÌÄ£´Ù´Â ¿¬±¸°á°ú¿¡ µû¶ó Áö¿ªÀÇ »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥´Â ¸Å¿ì Ȱ¹ßÇÏ°Ô »ç¿ëµÇ°í ÀÖ½À´Ï´Ù. ¿ì¸® ³ª¶ó¿¡¼µµ ´Ù¼öÀÇ ¿¬±¸ÀÚµéÀÌ Áö¿ªÀÇ »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥¸¦ »ç¿ëÇÑ ¹Ù ÀÖ½À´Ï´Ù. ÇÏÁö¸¸, Áö¿ªÀÇ »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥°¡ ¾î¶°ÇÑ ¹æ½ÄÀ¸·Î »ý¼ºµÇ°í »ç¿ëµÇ¾î¾ß ÇÏ´ÂÁö¿¡ ´ëÇÑ ³íÀÇ´Â ¾ÆÁ÷ ºÎÁ·ÇÕ´Ï´Ù. ¾Æ·¡ÀÇ ³í¹®µéÀº ±×·¯ÇÑ ³íÀǸ¦ ÃËÁøÇÏ´Â µ¥¿¡ µµ¿òÀÌ µÇ¸®¶ó »ý°¢ÇÕ´Ï´Ù. ¶ÇÇÑ Fukuda µîÀÇ ÀϺ» »ç·Ê´Â ¼±¸¿¡¼ °³¹ßµÈ ¹ÚÅ»Áö¼ö°¡ µ¿¾ç±Ç¿¡¼´Â ¾î¶°ÇÑ ¹æ½ÄÀ¸·Î Ȱ¿ëµÇ¾î¾ß ÇÏ´ÂÁö¿¡ ´ëÇÑ ±³ÈÆÀ» ÁÖ¸®¶ó ±â´ëÇÕ´Ï´Ù.
Gordon D. Census based deprivation indices: their weighting and validation. J Epidemiol Community Health 1995;49(suppl 2):S39-S44.
Gilthorpe MS. The importance of normalisation in the construction of deprivation indices. J Epidemiol Community Health 1995;49(suppl 2):S45-S50.
Fukuda Y, Nakamura K, Takano T. Municipal socioeconomic status and mortality in Japan: sex and age differences, and trends in 1973-1998. Soc Sci Med 2004;59:2435-45.
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6) ³ëÀΰú ¿©¼ºÀÇ »çȸ°æÁ¦Àû À§Ä¡
³ëÀΰú ¿©¼º¿¡¼ÀÇ »çȸ°æÁ¦Àû À§Ä¡¸¦ ¾î¶»°Ô ÇÒ °ÍÀΰ¡´Â Áö¼ÓÀûÀÎ ³íÀïÀÌ À̾îÁö°í ÀÖ½À´Ï´Ù. ¾Æ·¡ÀÇ ³í¹®µéÀº ³ëÀΰú ¿©¼º¿¡¼ÀÇ »çȸ°æÁ¦Àû À§Ä¡ ÁöÇ¥ ¼³Á¤°ú °ü·ÃÇÏ¿© ¸î °¡Áö À̽´¸¦ ¼Ò°³ÇÏ°Ô µÉ °ÍÀÔ´Ï´Ù.
Grundy E, Hold G. The socioeconomic status of older adults: How should we measure it in studies of health inequalities? J Epidemiol. Community Health 2001;55:895-904.
Bowling A. Socioeconomic differentials in mortality among older people. Journal of Epidemiology and Community Health 2004;58:438-440
Breeze E, Jones DA, Wilkinson P, Latif AM, Bulpitt CJ, Fletcher AE. Association of quality of life in old age in Britain with socioeconomic position: baseline data from a randomised controlled trial. J Epidemiol. Community Health 2004;58:667-673.
Thurston RC, Kubazansky LD, Kawachi I, Berkman LF. Is the association between socioeconomic position and coronary heart disease stronger in women than in men? Am J Epidemiol 2005;162:57-65.
Sacker A, Firth D, Fitzpatrick R, Lynch K, Bartley M. Comparing health inequality in men and women: prospective study of mortality 1986-96. BMJ 2000;320:1303-7.
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