leukemia72 {Biocomb}

desease data

Description

Leukemia dataset includes the bone marrow samples obtained from acute leukemia patients at the time of diagnosis: 25 acute myeloid leukemia (AML) samples; 9 T-lineage acute lymphoblastic leukemia (ALL) samples; and 38 B-lineage ALL samples. After preprocessing, the 100 genes with the largest variation across samples are selected.

Usage

leukemia72

Format

A data.frame containing 72 observations of 101 variables: 100 features and class with three diagnosis: 38 B-lineage ALL, 9 T-lineage ALL and 25 AML.

Source

Handl J, Knowles J, Kell DB, Computational cluster validation in post-genomic data analysis, Bioinformatics 21:3201-3212, 2005.

See Also

data_test, datasetF6, leukemia72_2, leukemia_miss

Examples

# load the dataset
data(leukemia72)
# X95735_at
with(leukemia72, by(X95735_at,Class,mean))

# M27891_at
with(leukemia72,tapply(M27891_at, Class, FUN = mean))
with(leukemia72, table(M27891_at=ifelse(M27891_at<=mean(M27891_at), "1", "2"), Class))