twinzygfh1

fertilityhistory_ip17.twinzygfh

Question label:

Zygotic twins

Question text:

Are {if LCHLVFH 3|4} Were {if any LCHLVFH = 3|4} [CHILD1] and [CHILD2] identical twins?

Question universe:

if [(ff_ivlolw = 2|3|MIS) & ff_everint 1] // New entrant never interviewed, excluding rising 16 year olds
And if [LPRNTADP2 = 1 | GRIDVARIABLES.NNATCH > 0] // Has had biological child(ren) or R has biological children in household
And if [LNPRNT2 > 0] // Has biological children
And if [TwinConf = 1 & ((sex of child 1) = (sex of child 2))] // Twins are of the same sex

Further details:
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