방법론

연구를 어떻게 수행했는지에 대해 기술할 때에는 다음의 사항을 참고하시기 바랍니다:

  • 서로 다른 방법에 대해 기술할 때에는 소제목으로 내용을 분리합니다
  • 무엇을 했는지에 관해 과거 시제로 기술합니다.
  • 새로운 방법에 대해서는 다른 연구자가 해당 실험을 재현해 볼 수 있도록 자세히 기술합니다.
  • 이전에 소개된 적이 있는 방법에 대해서는 간단히 기술하고, 독자들이 자세한 내용을 찾아볼 수 있도록 간단하게 인용합니다.
  • 해당 방법론을 수립하기 위해 정정한 부분이 있다면 이에 대해 정확하게 기술합니다.
  • 모든 통계 테스트와 변인에 대해 언급해야 합니다.

Example

Source

Mariëtte Lokate, Petra HM Peeters,Linda M Peelen, Gerco Haars, Wouter B Veldhuis and Carla H van Gils. Mammographic density and breast cancer risk: the role of the fat surrounding the fibroglandular tissue. Breast Cancer Research, 2011 Dec 3;13(5):R103. Publisher full text

Methods

Study population [CLEAR SUBHEADING]

The study population comprises participants of the Prospect-EPIC study [28], which is a part of the EPIC-NL study [29]. EPIC-NL is the Dutch contribution to the European Prospective Investigation into Cancer and Nutrition (EPIC) study [30,31]. The Prospect-EPIC participants were recruited through the breast cancer screening programme in Utrecht and vicinity... All participants gave their informed consent and the study was approved by The Institutional Review Board of the University Medical Centre Utrecht.

Mammographic density assessment [CLEAR SUBHEADING]

Mammographic density was assessed on the left mediolateral oblique mammograms (MLO) taken at the time of recruitment into the cohort...

For assessing the mammographic density, Cumulus software (University of Toronto, ON, Canada) was used [33]. With this software, two thresholds were set by the reader; one to distinguish the breast area from the background and a second to distinguish the dense from the non-dense area... [ESTABLISHED METHOD]

Statistical analysis [CLEAR SUBHEADING]

Patient characteristics were described within quintiles of dense area and non-dense area among controls. For continuous variables we used means with standard deviations if normally distributed and medians with interquartile ranges of not normally distributed data (number of children). For categorical variables, we show proportions...

Correlations between density measures with BMI and each other are calculated using the Pearson correlation coefficient. The non-linear density measures were transformed using natural logarithm in order to get normally distributed measures...

All P-values are two-sided and if below 0.05 the results were considered statistically significant. Analyses were conducted using PASW Statistics 17.0 (SPSS, Inc., Chicago, IL, USA). [STATISTICAL TESTS AND PARAMETERS]

투고하는 저널의 ‘저자들을 위한 지침’을 통해 방법론을 어떤 식으로 기술해야 하는지 확인하시기 바랍니다. 그리고 그 밖에도 해당 저널에서 온라인으로 출판한 샘플 리포트도 참조할 수 있습니다.

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