In LCBC-UiO/Questionnaires: Package with functions to calculate components and sums for LCBC questionnaires

The GDS is quite straight forward in its format, a series of 30 questions that take a yes or no answer. This binary coding makes it quite easy to work with. Several of the questions, however, are formulated in such a way that they require a reversal of the coding before the total score can be summed. The questions which require reversal of coding are, 01, 05, 07, 09, 15, 19, 21, 27, 29, 30, meaning answering "yes" to these should be altered to 0, and "no" altered to 1, before calculating the sum score. The total GDS score is after reversal, a simple addition of all the answers into a single score.

One point is given for any “No” answered to the following questions:
1, 5, 7, 9, 15, 19, 21, 27, 29 and 30

and one point is given for every “Yes” answered on the following questions:
2, 3, 4, 6, 8, 10, 11, 12, 13, 14, 16, 17, 18, 20, 22, 23, 24, 25, 26, 28

Depression categories

There are 3 categories of severity for the GDS total score. Below or equal to 9 is "Normal", above 19 is "Severe depression", and the remaining fall within "Mild depression".

|GDS score|Depression category| |---|---| |0-9|Normal| |10-19|Mild depressive| |20-30|Severe depressive|

LCBC-UiO/Questionnaires documentation built on July 18, 2023, 6:45 p.m.