Question | Answer |
Categorical | asks the respondent to place themselves in one of several categories. |
Continuous | interval or ratio measure, age, BP |
Summative | presents a total score in which all parts are represented equally |
Cumulative | accumulated characteristic with each item representing an increasing amount of the attribute being measured. |
Likert | summative scale most often used to assess attitudes or beliefs. Reflects level of agreement or disagreement |
Visual Analog Scale | 100mm line, popular interval scale, simple way to measure intensity |
Guttman | Unique combination of responses provide cumulative total score; Ensures there is only one dimension within a set of responses |
Semantic Differential Scale | Continuum scale between two extreme opposites; Extremes generally in 3 dimensions: (1) Evaluation; (2) Potency; (3) Activity |
Delphi | Expert panel consensus development; Uses several rounds of questionnaires (experts filling out); used to build clinical practice ideas |
Q-sort | Comparison sort using ranking cards to characterize attitudes, opinions or judgments |
Interview pros and cons | Pros:face to face, in depth probing, observation of response
Cons: lack of anonymity, cost & time insensitive, shcedualing |
Questionnaire pros and cons | Pros: quick, self administered, standardized, anonymity
Cons: misinterpretation, recall bias, unknown bias |
Internal Consistency | extent to which items meas various aspects of same charac & nothing else |