Welcome to the code and data repository for "Effectiveness of one dose of killed oral cholera vaccine in an endemic community in the Democratic Republic of the Congo: a matched case-control study" by Malembaka et al.
We provide three data sets from this study to reproduce analyses. One file from study period 1 (data/df_period1.rds), one from study period 2 (data/df_period1.rds) and one of the combined data across periods (data/df_combined.rds).
df_period1.rds
| variable name | variable type | definition |
|---|---|---|
| record_id | string | unique record id |
| id_case | string | unique id of matched case (equal to record_id when this is a case |
| case_status | string ('case' or 'control') | indicates whether case or control |
| case_control | binary | 0 if control, 1 if case |
| age_vacc | decimal | age at vaccination in years |
| age_group_vacc | string | age group at vaccination in years |
| cat_sex | string | sex of the participant |
| ocv_single_dose | string ('Single dose' or 'Not vaccinated') | classification of vaccination status for main analysis |
| ocv_2dose | string ('Two doses' or 'Not vaccinated') | classification of vaccination status by receipt of of two doses of kOCV |
| ocv_atleast_1dose | string ('At least one dose' or 'Not vaccinated') | classification of vaccination status by receipt of at least one dose of kOCV |
| ocv_all_dose | string ('Two doses', 'One dose', 'Not vaccinated') | overall classification of the vaccination status |
| vaccine_card | string ('Available', 'Unavailable') | availability of the vaccination card for those reporting to be vaccinated |
| ind_vacc_card | string ('yes', 'no') | availability of the vaccination card for those reporting to be vaccinated |
df_period2.rds
This data set includes all the variables available in 'df_period1.rds', with additional data on household characteristics.
| variable name | variable type | definition |
|---|---|---|
| drinking_water_source | string ('Improved' or 'Unimproved') | drinking water source used by the participant, classified based on the JMP criteria |
| educ | string ('None or primary', 'Lower secondary', 'Upper secondary', or 'Bachelors or higher') | level of education attainment |
| handwash_soapwater | string ('No' or 'Yes') | availability of a handwashing facility with soap and water in the household |
| hh_size | integer | number of people in the participant's household |
| n_hh_centered | decimal | household size centered to the mean |
| occup | string ('No work', 'Preschool children', 'Students', 'Informal work', 'Salaried') | participant's occupation |
| toilet_shared | string ('Private' or 'Shared' | whether the participant used a toilet shared by multiple households compared with using a private toilet |
| toilet_type | string ('Improved' or 'Unimproved') | type of sanitation facility, based on JMP classification |
| wealth_index | decimal | wealth index derived from principal component analysis of household assets and housing structure |
| wealth_index_centered | decimal | wealth index derived from principal component analysis of household assets, and centered to the mean |
df_combined.rds
The df_combined.rds data set contains the same variable as df_period1.rds.