Differentially private release of medical microdata: an efficient and practical approach for preserving informative attribute values

Table 11 Result of query Q₃

Age group	Original	The proposed method	k-anonymization
10	1.0	2.2	8.9
20	1.4	1.4	8.9
30	2.1	5.7	8.9
40	2.7	5.5	14.5
50	3.4	4.2	14.5
60	4.0	4.1	14.5
70	3.6	4.8	15.7
80	4.3	4.5	15.7
90	5.8	6.5	15.7

ISSN: 1472-6947