Post-enumeration Survey (PES) - Statistics South Africa
Post-enumeration Survey (PES) - Statistics South Africa
Post-enumeration Survey (PES) - Statistics South Africa
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<strong>Statistics</strong> <strong>South</strong> <strong>Africa</strong><br />
68<br />
Table 30: Net difference rate, index of inconsistency, and gross difference rate for relationship to<br />
head of household<br />
Net Difference Rate<br />
Index of Inconsistency<br />
Response category<br />
Total<br />
consistent Total in Total in<br />
95% 95%<br />
95% 95%<br />
cases Census <strong>PES</strong> Rate LCL UCL Index LCL UCL<br />
Undetermined 6 2 217 115 0,93 0,89 0,97 99,58 95,61 103,72<br />
Head/Acting Head 53 980 60 481 61 981 -0,66 -0,77 -0,56 16,23 15,96 16,49<br />
Husband/Wife/Partner 21 840 27 424 26 448 0,43 0,34 0,52 21,47 21,06 21,89<br />
Son/Daughter 68 726 77 511 79 017 -0,66 -0,78 -0,55 18,62 18,35 18,88<br />
Adopted Son/Daughter 103 864 456 0,18 0,15 0,21 84,62 79,79 89,73<br />
Stepchild 152 961 885 0,03 0 0,07 83,87 79,79 88,17<br />
Brother/Sister 3 617 6 957 6 730 0,1 0,03 0,17 48,61 47,44 49,82<br />
Parent(Mother/Father) 378 1 741 1 032 0,31 0,27 0,35 73,16 70,03 76,42<br />
Parent-in-law 126 501 408 0,04 0,02 0,06 72,42 67,09 78,17<br />
Grand/Great Grandchild 27 532 33 455 34 582 -0,5 -0,6 -0,4 22,43 22,05 22,82<br />
Son/Daughter-in-law 703 1 886 1 338 0,24 0,2 0,28 56,78 54,23 59,45<br />
Brother/Sister-in-law 218 1 032 743 0,13 0,1 0,16 75,73 71,78 79,89<br />
Grandmother/Father 43 2 432 376 0,91 0,86 0,95 97,22 93,63 100,94<br />
Other relative 3 473 7 557 10 732 -1,4 -1,49 -1,31 64,55 63,37 65,75<br />
Non-related person 615 1 595 1 771 -0,08 -0,12 -0,04 63,93 61,28 66,7<br />
Total 181 512 226 614 226 614 0 -0,26 0,26<br />
Aggregated Index of Inconsistency = 25,9<br />
Gross Difference Rate = 19,9<br />
Rate of Agreement = 0,8<br />
The characteristic 'relationship to head of household' shows a moderate level of inconsistency or<br />
variability (20% < index < 50%). It may not be reported consistently from survey to survey. In the case of<br />
Census 2011 and <strong>PES</strong> 2011, the inconsistencies are most likely due to the fact that the person referred<br />
to as head was not necessarily the same in both cases. Given the de facto <strong>enumeration</strong> rule (based on<br />
presence), the person could have been the 'acting head' in the absence of the normal head of<br />
household. It may not be possible to ensure more consistent responses for this variable in future surveys<br />
unless a de jure rule (usual residence) is used. With a de jure rule, the head of household generally<br />
remains the same, even when temporarily absent from the household.<br />
<strong>Post</strong> Enumeration <strong>Survey</strong> (<strong>PES</strong>)
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