Fabricating data: How substituting values for nondetects can ruin results, and what can be done about it

Estimation of Average Concentration in the Presence of Nondetectable Values

Richard Hornung, Laurence D. Reed · Applied Occupational and Environmental Hygiene · 1990 · 3.4K citations

Pharmacy, Biostatistics, Analytical Toxicology +16

Survival analysis using the SAS system : a practical guide

Paul D. Allison · Medical Entomology and Zoology · 1995 · 2.4K citations

Public Health, Biostatistics, Survival Analysis +10

Estimation of descriptive statistics for multiply censored water quality data

Dennis R. Helsel, Timothy A. Cohn · Water Resources Research · 1988 · 327 citations

Natural Sciences, Biostatistics, Mathematics +16

Nondetects and Data Analysis: Statistics for Censored Environmental Data

Thomas Harter · Vadose Zone Journal · 2006 · 309 citations

Natural Sciences, Environmental Sciences, Statistics +9

Estimation of Distributional Parameters for Censored Trace Level Water Quality Data: 1. Estimation Techniques

Robert J. Gilliom, Dennis R. Helsel · Water Resources Research · 1986 · 307 citations

Natural Sciences, Environmental Sciences, Environmental Monitoring +16