iron {AICcmodavg}

Iron Content in Food

Description

This data set, originally from Adish et al. (1999), describes the iron content of food cooked in different pot types.

Usage

data(iron)

Format

A data frame with 36 rows and 3 variables.

Pot

pot type, one of "aluminium", "clay", or "iron".

Food

food type, one of "legumes", "meat", or "vegetables".

Iron

iron content measured in mg/100 g of food.

Details

Heiberger and Holland (2004, p. 378) use these data as an exercise on two-way ANOVA with interaction.

Source

Heiberger, R. M., Holland, B. (2004) Statistical Analysis and Data Display: an intermediate course with examples in S-Plus, R, and SAS. Springer: New York.

Adish, A. A., Esrey, S. A., Gyorkos, T. W., Jean-Baptiste, J., Rojhani, A. (1999) Effect of consumption of food cooked in iron pots on iron status and growth of young children: a randomised trial. The Lancet 353, 712–716.

Examples

data(iron)
str(iron)