Discrepancy in 'don't know' responses to yasoc00
For yasoc00 (and yasoc90/yasoc10), what occupation would you like to do, there are zero 'don't know' responses for waves 3 and 4, and then 370 'don't know' responses in wave 5. Is this due to a change in the way the interviewers asked the question? How were respondents coded if they had no occupational preferences in waves 3 and 4? Are they in 'missing'? If so, is there any way that 'don't knows' in waves 3 and 4 can be separated out from those who were missing for other reasons?