An Approach for Assessing the Distribution of Reporting Delay in Portuguese AIDS Data

• Type: Article in International Conference Proceedings Book
• Date: 2016

Authors

Oliveira, A (Author) Other; Rita Gaio (Author) FCUP; Da Costa, JP (Author) FCUP; reis, lp (Author) REIT

Conference proceedings International

Title: NEW ADVANCES IN INFORMATION SYSTEMS AND TECHNOLOGIES, VOL 2

Pages: 641-649

World Conference on Information Systems and Technologies (WorldCIST)

Recife, BRAZIL, MAR 22-24, 2016

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Scientific classification

FOS: Natural sciences > Mathematics

Other information

Authenticus ID: P-00K-AJ6

DOI: 10.1007/978-3-319-31307-8_66

Abstract (EN): HIV/AIDS epidemic is an important public health problem. The burden of the epidemic is estimated from surveillance systems data. The collected information is incomplete, making the estimation a challenging task and the reported trends often biased. The most common incomplete-data problems, in this kind of data, are due to under diagnosis and reporting delays, mainly in the most recent years. This is a classical problem for imputation methodologies. In this paper we study the distribution of AIDS reporting delays through a mix approach, combining longitudinal K-means with the generalized least squares method. While the former identifies homogeneous delay patterns, the latter estimated longitudinal regression curves. We found that a 2-cluster structure is appropriated to accommodate the heterogeneity in reporting delay on HIV/AIDS data and that the corresponding estimated delay curves are almost stationary over time.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9