Imputation rules for the implementation of the pre-unification education variable in the BASiD Data Set

Journal for Labour Market Research

Table 5 Differences among imputation procedures – 1984, part 1

	Differences Q	Individuals N	Coverage C	Q/N	Q/C
Sum of squared difference
IMP1	687.5	5,698	0.53	0.121	1297.2
IMP2	2242.7	7,556	0.71	0.297	3158.7
IMP3	3551.9	9,027	0.82	0.393	4331.6
Absolute difference
IMP1	84.1	5,698	0.53	0.015	158.7
IMP2	166.4	7,556	0.71	0.022	234.4
IMP3	204.7	9,027	0.82	0.023	249.6

Source: BASiD 2007, weighted statistics.
Notes: Total number of individuals in 1984: 10,702. The sum of square differences and absolute differences are estimated using the age groups in 1981. The coverage rate of IMP3 is rather low because for some individuals the requirements were not met at that point in time.