At the same time, each circular diagram is composed of 12 wedges, representing a month. Nightingale’s diagram is composed for two circular diagrams: number of deaths in 1854-1855 and number of deaths in 1855-1856. Particularly, she coded the three most recurrent causes of death: blue for preventable diseases, red for wounds and black for those due to other causes. The above diagram shows mortality in hospitals. The entire areas may be compared by following the blue, the red, & the black lines enclosing them. In October 1854, & April 1855, the black area coincides with the red, in January & February 1856, the blue coincides with the black.
1854 marks the boundary of the deaths from all other causes during the month. The black line across the red triangle in Nov. The blue wedges measured from the centre of the circle represent area for area the deaths from Preventable or Mitigable Zymotic diseases, the red wedges measured from the centre the deaths from wounds, & the black wedges measured from the centre the deaths from all other causes. The legend reads: The Areas of the blue, red, & black wedges are each measured from the centre as the common vertex. Then, as she was aware of that not all of the audience members would be able to read statistical tables and data and that not all the information could be visually represented, she translated the most relevant information into diagrammatic language, creating ‘The rose diagram’. With the help of the statistician William Farr, Nightingale spent months analysing tables and charts until she reached a complete understanding of all the information. For this, she analysed and studied statistical material and reports about the soldiers’ deaths obtained from different sources (i.e. The success of this diagram relied on the display of accurate information. Nightingale believed that diagrams could be more effective ways of communication than only written words. Nightingale’s diagram was part of her report about the soldiers’ causes of mortality in hospitals during the war aimed to change UK’s attitude to hospitals care. This diagram was created in 1858 for the nurse Florence Nightingale to show the poor sanitary conditions of hospitals under which the British army was exposed during the Crimean War (1853-1856). Particularly, programme 3 explains the history of ‘The rose diagram’.
나이팅게일 ROSE DIAGRAM SERIES
‘The beauty of diagrams’ at BBC Four is a series of 6 programmes that analyse key diagrams.
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