There are a few variables of observation which have data listed as inapplicable, the reason for which I can't work out. These are:
jbsat - some individuals are inapplicable despite being employed.
jbsoc00 - no reason given in the online description of the variable.
aidhh - there are 55 individuals inapplicable despite having a household size greater than 1.
ndepchl_dv - no reason given in the online description of the variable.
scend - no reason given in the online description of the variable.
screlhappy - there are 637 individuals inapplicable despite being married or living as a couple.
xphsdb - there are 660 individuals inapplicable despite being under some form of rental agreement.
jbhrs - there are many individuals who are employed yet listed as inapplicable.
Could you let me know of the reasons for inapplicability of the above?