Questionnaire Dwelling Unit-Level and Person Pair-Level Sampling ...

The QDU selection probability was defined as
( Ph(00)
)
P = 1 − ,
(2.8)
* *
h
where P * h(00) is the probability of not selecting any person. For the DUs with the sum of agespecific
selection probabilities larger than or equal to 2 (Case I), P * h(00) is 0. It follows from
Section 2.1, under Case II, P * h(00) can be calculated as
P
*
h(00)
⎛ 1 ⎞ 3 ⎡P′ P′
⎤⎡
1 1
= − + +
h(0) h(0)
⎜1 ⎟ ⎢ ⎥⎢ ⎥ ,
⎝ Fs ⎠ Fs ⎣ K′ ⎦⎢⎣ 1−P′ h(0) 1−P′
h(0)
⎥⎦
⎤
(2.9)
where P′ h(0) is the selection probability of a dummy person when person selection probabilities
are adjusted by F s .
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