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The final data set used for this case study originates from a larger data set consisting of monthly recording of body weight, parasitaemia, packed cell volume and tsetse apparent density. Animal deaths, abortions, births and weaning ages were recorded as they occurred. Animals with PCV <26% were treated with diminazene acetate and recorded. The data were entered into a Dbase IV database using an in-house data entry system with inbuilt error checking and validation features. A portion of this Dbase data file is stored in CS10Data1 for illustration purposes. The columns are described in CS10Doc1. Users may like to try out further statistical analysis on these data and are welcome to discuss these analyses further with the authors. However, no results may be published without permission from ILRI. The above data were then reduced to smaller datasets as described in the Data management section. Individual animal adult mean 6-monthly body weights, PCVs, percentage of months found with trypansomes and percentage of months treated are stored in CS10Data2, documented in CS10Doc2. Individual mean calf growth rates are stored in CS10Data3 (documented in CS10Doc3) and 12-month body weights in CS10Data4 (documented in CS10Doc4). These intermediary data sets were then used to calculate overall 6-monthly mean values for the various variables. These are store in CS10Data5 (documented in CS10Doc5). This is the summary file that is used for the final statistical analysis of the effect of tsetse control. |
