• Cause & Effect Diagrams

  • A Cause & Effect Diagram (sometimes referred to as a Fishbone Diagram) is used to categorize and organize ideas about contributing factors and their relationships within a process.

    Use a Cause & Effect Diagram to: 

    • Define and understand the causes of an outcome
    • Graphically display the relationship of causes to the outcome
    • Help identify improvement opportunities

    1 Pdf Icon See an example here.

    1. Start by drawing a central horizontal line with a box at one end. Write the specific process or outcome being studied in the box.
    2. Next, draw four to six vertical lines from the horizontal line; these will identify classes of contributors (sources) to the central issue. Frequent classes include People, Equipment, Environment, Methods, and Materials. These may be supplemented by other sources identified by the team.
    3. Generate a list of factors or situations that ‘cause’ a problem and assign them to one of the identified sources. The Cause & Effect Diagram can be completed by either working entirely through all of the causes in one source before moving on to the next or moving randomly from source to source as items are identified.
    4. Look for multiple causes within a single source. As questions such as:
    • What is being done? 
      • Why (cause) is it done at all? 
      • What else could be done in its place to accomplish the same result?
    • When is it done? 
      • Why (cause) is it done at that time? 
      • Is there another time it could be done?
    • Who does it? 
      • Why (cause) these specific individuals?
      • Could someone else do it?
      • Whehttp://dev2.rsna.org/WorkArea/edit.aspxre is it done?
      • Why (cause) is it done there?
      • Where else could it be done?
    • How is it done?
      • Why (cause) is it done that way?
      • Are there other ways it could be accomplished?

    Continue to analyze the situation until the causes of the problem are specific enough that a potential change can be identified. Then seek consensus on the likely few causes that if ‘fixed’ would improve the process.

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Costa Rica
Dominican Republic
El Salvador
Netherlands Antilles
St. Vincent & Grenadines
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Afghanistan   Grenada   Pakistan
Albania   Guatemala   Papua New Guinea
Algeria   Guinea   Paraguay
Angola   Guinea-Bissau   Peru
Armenia   Guyana   Phillippines
Azerbaijan   Haiti   Rwanda
Bangladesh   Honduras   Samoa
Belarus   India   Sao Tome & Principe
Belize   Indonesia   Senegal
Benin   Iran   Serbia
Bhutan   Iraq   Sierra Leone
Bolivia   Jordan   Solomon Islands
Bosnia & Herzegovina   Jamaica   Somalia
Botswana   Kenya   South Africa
Bulgaria   Kiribati   South Sudan
Burkina Faso   Korea, Dem Rep (North)   Sri Lanka
Burundi   Kosovo   St Lucia
Cambodia   Kyrgyzstan   St Vincent & Grenadines
Cameroon   Laos\Lao PDR   Sudan
Cape Verde   Lesotho   Swaziland
Central African Republic   Liberia   Syria
Chad   Macedonia   Tajikistan
China   Madagascar   Tanzania
Colombia   Malawi   Thailand
Comoros   Maldives   Timor-Leste
Congo, Dem. Rep.   Mali   Togo
Congo, Republic of   Marshall Islands   Tonga
Cote d'Ivoire   Mauritania   Tunisia
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Dominica   Moldova   Tuvalu
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Egypt   Morocco   Uzbekistan
El Salvador   Mozambique   Vanuatu
Eritrea   Myanmar   Vietnam
Ethiopia   Namibia   West Bank & Gaza
Fiji   Nepal   Yemen
Gambia, The   Nicaragua   Zambia
Georgia   Niger   Zimbabwe
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