Validating a survey
Two versions of the scales are presented here, one for interviewer-administration and the other for self-administration.Note that the K6 is merely a truncated form of the K10 in which four questions are deleted.You can create 10 continuous versions or 10 dichotomous versions from the same equation. A quick thing you might want to do if you want to know this stuff in a rough and ready way: You can ask people if they are in treatment and, if so, you can ask them to think about the month before treatment and to tell you how they would respond to the K10/K6 questions for that month.This is described in the discussion section of the paper. Note that this approach will only expand your assessment to include people who might have high distress right now were it not for current treatment (e.g., taking their lithium every day).Scoring Note: The K10 and the K6 scales are administered in Australia using an alternate scoring system based on responses of "1-5" versus the "0-4" system presented here.
For a comprehensive list of articles on the K10 and K6, click here.A minimal design would be to carry out a clinical evaluation of 50 people who have a positive K6 score (10 or more on the 0-24 scale) and 50 who have a score in the range 0-9, although larger numbers would be better.The clinical re-interview should be carried out within 2 days of the K6 to make sure respondents are referring to the same 30-day recall period. Has the scale been used in surveys of racial and ethnic populations?For those of you who are interested in translating the K10/6 self-administration forms into your language, we are using the WHO-CIDI translation protocol for all official K10/K6 translations. We can then tell you if we already have another group working on a translation in your language and, if not, we can discuss with you a time line for your translation. Validation K10/K6 validations are being done in primary care clinics, community mental health centers, and social welfare offices.The validation standards differ in each case, but our preference is for validation to be based on a semi-structured research diagnostic interview, such as the SCID, and to have a sufficient number of respondents validated to have the statistical power needed for evaluation.