Frequency of water contact. Frequency of water contact by season, hour of the day, age, sex (boys up = positive values; girls down = negative values), and type of activity (see legend) for 1,651 inhabitants of the rural village of Ndombo in Northern Senegal as recorded during 175 days of observational studies. This graph reflects the division of the 121,771 total frequencies given in Table 1, where combinations of two or three activities were attributed to the corresponding single activities with weight of 0.50 and 0.33, respectively. Hour of the day is the first moment of each one-hour interval.
Sow et al. BMC Infectious Diseases 2011 11:198 doi:10.1186/1471-2334-11-198