Tweedie distributions for fitting semicontinuous health care utilization cost data.
Tweedie distributions for fitting semicontinuous health care utilization cost data.
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DOI:
10.1186/s12874-017-0445-y
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发表时间:
2017-12-19
影响因子:
4
通讯作者:
Kurz CF
中科院分区:
文献类型:
--
作者:
Kurz CF
The statistical analysis of health care cost data is often problematic because these data are usually non-negative, right-skewed and have excess zeros for non-users. This prevents the use of linear models based on the Gaussian or Gamma distribution. A common way to counter this is the use of Two-part or Tobit models, which makes interpretation of the results more difficult. In this study, I explore a statistical distribution from the Tweedie family of distributions that can simultaneously model the probability of zero outcome, i.e. of being a non-user of health care utilization and continuous costs for users. I assess the usefulness of the Tweedie model in a Monte Carlo simulation study that addresses two common situations of low and high correlation of the users and the non-users of health care utilization. Furthermore, I compare the Tweedie model with several other models using a real data set from the RAND health insurance experiment. I show that the Tweedie distribution fits cost data very well and provides better fit, especially when the number of non-users is low and the correlation between users and non-users is high. The Tweedie distribution provides an interesting solution to many statistical problems in health economic analyses.
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影响因子:
2.1
作者:
Basu, Anirban;Arondekar, Bhakti V.;Rathouz, Paul J.
通讯作者:
Rathouz, Paul J.
影响因子:
2.1
作者:
Jones, Andrew M.;Lomas, James;Rice, Nigel
通讯作者:
Rice, Nigel
DOI:
10.1002/bimj.201400081
发表时间:
2016-03
期刊:
Biometrical journal. Biometrische Zeitschrift
影响因子:
--
作者:
Swallow B;Buckland ST;King R;Toms MP
通讯作者:
Toms MP
DOI:
10.1111/rssa.12141
发表时间:
2016-10-01
影响因子:
2
作者:
Jones, Andrew M.;Lomas, James;Rice, Nigel
通讯作者:
Rice, Nigel
DOI:
10.1002/joc.1063
发表时间:
2004-08-01
期刊:
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子:
--
作者:
Dunn, PK
通讯作者:
Dunn, PK