by Usha Govindarajulu | Nov 19, 2025 | Biostatistics, Blog, Usha Govindarajulu
November 19, 2025 In longitudinal data with irregularly timed visits, semi-parametric joint models have been proposed to account for the dependence between times and the Sun model (Sun et al, 2011) has been the most suitable for count data. The authors have extended...
by Usha Govindarajulu | Nov 6, 2025 | Biostatistics, Blog, Usha Govindarajulu
November 6, 2025 For these authors, the goal of this paper was to apply pseudo-observations to estimate the regression coefficients in the Cox proportional hazards model under length-biased right-censored (LBRC) data. On some occasions as they found, observations may...
by Usha Govindarajulu | Oct 23, 2025 | Biostatistics, Blog, Usha Govindarajulu
October 22, 2025 The authors studied the approximate maximum likelihood estimation (AMLE), which has been proved to be an effective method to correct both measurement error and misclassification simultaneously in a logistic regression model, to correct biases caused...
by Usha Govindarajulu | Oct 8, 2025 | Biostatistics, Blog, Usha Govindarajulu
October 8, 2025 Mixed effects logistic regression models require individual level data. Sometimes data needs to be on the population level and it can be aggregated into counts, for example, but this could also lead to loss of other information. Federated learning...
by Usha Govindarajulu | Sep 24, 2025 | Biostatistics, Blog, Usha Govindarajulu
September 22, 2025 The authors have presented a new method to allow accelerated failure time models (AFTs) to have a flexible parametric framework and to also allow implementing mixture and non-mixture cure models. The authors aimed to introduce extensions to the...
by Usha Govindarajulu | Aug 28, 2025 | Biostatistics, Blog, Usha Govindarajulu
August 27, 2025 The authors are motivated by small sample laboratory or animal studies with non-Gaussian biomarker values and came up with a bootstrap box-cox likelihood ratio confidence interval for the median. Normally due to non-normality of data, one might...
