| Oncho {pubh} | R Documentation |
Onchocerciasis in Sierra Leone.
Description
Study of onchocerciasis ("river blindness") in Sierra Leone, in which subjects were classified according to whether they lived in villages in savannah or rainforest area.
Usage
Oncho
Format
A labelled tibble with 1302 rows and 7 variables:
- id
Subject ID.
- mf
Infected with Onchocerciasis volvulus, factor with levels "Not-infected" and "Infected".
- area
Area of residence, factor with levels "Savannah" and "Rainforest".
- agegrp
Age group in years, factor with levels "5-9", "10-19", "20-39" and "40+".
- sex
Subject sex, factor with levels "Male" and "Female".
- mfload
Microfiliariae load.
- lesions
Severe eye lesions, factor with levels "No" and "Yes".
Source
McMahon, JE, Sowa, SIC, Maude, GH and Kirkwood BR (1988) Onchocerciasis in Sierra Leone 2: a comparison of forest and savannah villages. Trans Roy Soc Trop Med Hyg 82: 595-600.
Kirkwood, BR and Sterne, JAC (2003) Essential Medical Statistics. Second Edition. Blackwell.
Examples
require(dplyr, quietly = TRUE)
data(Oncho)
Oncho %>%
select(mf, agegrp) %>%
cross_tbl(by = "mf")