Biostatistics and Bioinformatics Branch (BBB)

Calculating percentiles for distance and velocity based on the NICHD Fetal Growth Standard by the NICHD Fetal Growth Team

• The distance program corresponds directly to percentiles reported in Louis et al. (2015)
  • FetalGrowth_Calculator_Distance_0730.R (R 47 KB)
  • FetalGrowth_Calculator_Distance_0730.R (HTML)
• The velocity program produces percentiles corresponding to the percentile of change seen over a fixed time interval of gestational age for each of the important ultrasound biometric measurements (R 48 KB)
  • FetalGrowth_Calculator_Velocity_0730.R (R 48 KB)
  • FetalGrowth_Calculator_Velocity_0730.R (HTML)

Marginal analysis of measurement agreement among multiple raters with non-ignorable missing, by Dr. Z. Chen

• Zip file: Marginal analysis of measurement agreement among multiple raters with non-ignorable missing (ZIP 41 KB)
• Documentation - Marginal analysis of measurement agreement among multiple raters with non-ignorable missing
• AnalysisProj2.R
• R_function_file.R
• visualization.r

Joint analysis of longitudinal and survival data measured on nested time-scales using shared parameter models: an application to fecundity data, by Dr. McLain, R. Sundaram, and Germaine M. Buck Louis

• Zip file: Joint analysis of longitudinal and survival data measured on nested time-scales using shared parameter models: an application to fecundity data (ZIP 129 KB)
• Documentation: Joint analysis of longitudinal and survival data measured on nested time-scales using shared parameter models: an application to fecundity data
• Oxford_test_day_level.csv (CSV 322 KB)
• Oxford_test_women_level.csv (CSV 5 KB)
• Oxford_train_day_level.csv (CSV 593 KB)
• Oxford_train_women_level.csv (CSV 10 KB)
• Oxford.Anal.R
• Oxford_prediction.R
• R_programs.R