The Korean Journal of Applied Statistics (응용통계연구)

The Korean Statistical Society (한국통계학회)
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Comparison of nomograms designed to predict hypertension with a complex sample

고혈압 예측을 위한 노모그램 구축 및 비교

  • Received : 2020.06.03
  • Accepted : 2020.08.06
  • Published : 2020.10.31
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Abstract

Hypertension has a steadily increasing incidence rate as well as represents a risk factors for secondary diseases such as cardiovascular disease. Therefore, it is important to predict the incidence rate of the disease. In this study, we constructed nomograms that can predict the incidence rate of hypertension. We use data from the Korean National Health and Nutrition Examination Survey (KNHANES) for 2013-2016. The complex sampling data required the use of a Rao-Scott chi-squared test to identify 10 risk factors for hypertension. Smoking and exercise variables were not statistically significant in the Logistic regression; therefore, eight effects were selected as risk factors for hypertension. Logistic and Bayesian nomograms constructed from the selected risk factors were proposed and compared. The constructed nomograms were then verified using a receiver operating characteristics curve and calibration plot.

고혈압은 발병률이 꾸준히 증가하고 있을 뿐 아니라, 심혈관 질환과 같은 2차 질병의 주된 위험 요인이 되었다. 게다가 고혈압은 뇌졸중, 혈관성 치매와 같은 다른 합병증을 유발하는 질병이다. 따라서 고혈압 발병률을 예측하는 것은 중요한 일이다. 본 연구에서, 고혈압 발병률을 예측할 수 있는 노모그램을 구축하였다. 데이터는 2013년부터 2016년까지의 국민건강영양조사로부터 얻어졌다. 복합 표본의 특성을 고려하여 Rao-Scott chi-squared test를 통해 고혈압에 영향을 미치는 10가지 요인을 규명하였다. 하지만 로지스틱 회귀분석 시, 흡연 상태와, 운동 유무는 유의하지 않았다. 따라서 8개의 주 효과를 고혈압의 위험요인으로 최종 선별하였다. 그리고 최종 선별된 위험 요인들로 로지스틱 노모그램과 베이지안 노모그램을 제시 및 비교하였다. 마지막으로 ROC curve 그래프와 calibration plot을 통해 노모그램을 검증하였다.

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