Understanding Society User Support

Hi,

I have a query regarding the status of 'inapplicable' for certain variables.

A few participants show up as inapplicable for all questions in the loneliness scale (sclackcom, scisolate, scleftout) in waves 10 and 11 of the main study. From looking at the questionnaire, I cannot see any preceding questions which would make the loneliness questions inapplicable.

The questionnaire also states the following, leading me to believe that the mode of the interview may be the reason:

Universe If ((GRIDVARIABLES.ModeType = 1 & CASISTART.scac = 1 Thru 3) | GRIDVARIABLES.ModeType = 2|3) // Mode is face-to-face and has agreed to self-completion OR mode is telephone or web

Upon further investigation I noticed that all inapplicable data for loneliness variables were from participants who were interviewed face to face, however not everyone who was interviewed face to face was inapplicable on these variables.

It would be great if you could shed some light on why some participants who were interviewed face to face were inapplicable on loneliness variables, while others weren't.
Or whether there's a different reason for the inapplicable values on loneliness items ?

Thanks for your help!