The khisr package seamlessly integrates with the Kenya
Health Information System (KHIS) API from R, empowering researchers and
public health professionals to easily access and analyze valuable health
data. Built on the DHIS2 platform, khisr automates data retrieval,
saving you time and effort compared to manual methods.
To ensure a secure and seamless experience, khisr
operates by default in authenticated mode, enabling you to interact with
KHIS as a recognized user. This means that before diving into KHIS data
exploration, you’ll need to establish your credentials with the
system.
Obtain your KHIS credentials: These typically consist of a username and password, which you can acquire through appropriate channels within the KHIS organization.
Store your credentials securely: khisr provides a convenient mechanism for storing your credentials within your R environment. To learn how to set and manage your credentials effectively, please refer to the comprehensive guide at Set Your Credentials.
KHIS uses metadata to define the structure and meaning of the data stored in the system. For more information see data dimensions
khisr provides a number of high level metadata helpers
for obtaining details of the different types of metadata. There is a
helper for each of the main metadata categories in DHIS2, in fact auto
complete in the users R IDE will often make typing these very fast. This
is the list of the numerous high level metadata helpers in
khisr.
| khisr function | KHIS API Endpoint |
|---|---|
get_categories() |
categories |
get_category_combos() |
categoryCombos |
get_category_option_combos() |
categoryOptionCombos |
get_category_option_group_sets() |
categoryOptionGroupSets |
get_category_option_groups() |
categoryOptionGroups |
get_category_options() |
categoryOptions |
get_data_element_group_sets() |
dataElementGroupSets |
get_data_element_groups() |
dataElementGroups |
get_data_elements() |
dataElements |
get_data_sets() |
dataSets |
get_indicator_group_sets() |
indicatorGroupSets |
get_indicator_groups() |
indicatorGroups |
get_indicators() |
indicators |
get_option_group_sets() |
optionGroupSets |
get_option_groups() |
optionGroups |
get_option_sets() |
optionSets |
get_options() |
options |
get_organisation_unit_groupsets() |
organisationUnitGroupSets |
get_organisation_unit_groups() |
organisationUnitGroups |
get_organisation_units() |
organisationUnits |
get_dimensions() |
dimensions |
get_user_groups() |
userGroups |
get_period_types() |
periodTypes |
To filter the metadata there are several filter operations that can be applied to the returned list of metadata. The format of the filter itself is straight-forward and follows the pattern property:operator:value, where property is the property on the metadata you want to filter on, operator is the comparison operator you want to perform and value is the value to check against (not all operators require value).
| KHIS Operator | Infix Operator | Description |
|---|---|---|
eq |
%.eq% |
Equality |
!eq |
%.~eq% |
Inequality |
ieq |
%.ieq% |
Case insensitive string, match exact |
ne |
%.ne% |
Inequality |
like |
%.Like% |
Case sensitive string, match anywhere |
!like |
%.~Like% |
Case sensitive string, not match anywhere |
$like |
%.^Like% |
Case sensitive string, match start |
!$like |
%.~^Like% |
Case sensitive string, not match start |
like$ |
%.Like$% |
Case sensitive string, match end |
!like$ |
%.~Like$% |
Case sensitive string, not match end |
ilike |
%.like% |
Case insensitive string, match anywhere |
!ilike |
%.~like% |
Case insensitive string, not match anywhere |
$ilike |
%.^like% |
Case insensitive string, match start |
!$ilike |
%.~^like% |
Case insensitive string, not match start |
ilike$ |
%.like$% |
Case insensitive string, match end |
!ilike$ |
%.~like$% |
Case insensitive string, not match end |
gt |
%.gt% |
Greater than |
ge |
%.ge% |
Greater than or equal |
lt |
%.lt% |
Less than |
le |
%.le% |
Less than or equal |
token |
%.token% |
Match on multiple tokens in search property |
!token |
%.~token% |
Not match on multiple tokens in search property |
in |
%.in% |
Find objects matching 1 or more values |
!in |
%.~in% |
Find objects not matching 1 or more values |
Basic usage of the metadata filter
# Retrieve organisation units by county (level 2)
county <- get_organisation_units(level %.eq% '2')
county
# Retrieve county by name (Mombasa)
county <- get_organisation_units(level %.eq% '2',
name %.like% 'mombasa')
county
data_element_id <- c('cXe64Yk0QMY', 'XEX93uLsAm2')
# Retrieve data elements by ID using operator in
data_elements <- get_data_elements(id %.in% data_element_id)
data_elements
# Retrieve data elements by filtering using dataElementGroups
data_elements <- get_data_elements(dataElementGroups.name %.like% 'moh 705')
data_elementsThe analytics resource in DHIS2 empowers you to access and analyze aggregated data across various dimensions. To effectively leverage this resource, let’s explore the key functions and parameters involved:
get_analytics(): Retrieves aggregated data based on
specified dimensions and filters.analytics_dimension(): Constructs dimensions for
queries, ensuring accurate data retrieval.%.d% (infix operator): Convenient shorthand for
creating dimension filters.%.f% (infix operator): Convenient shorthand for
creating filter dimensions.The dimension query parameter defines which dimensions
should be included in the analytics query. Any number of dimensions can
be specified. The dimension parameter should be repeated for each
dimension to include in the query response. The query response can
potentially contain aggregated values for all combinations of the
specified dimension items. The fixed dimensions are the data
element (dx) period (time)
(pe) and organisation unit (ou)
dimension. You can dynamically add dimensions through categories, data
element group sets and organisation unit group sets.
| Dimension ID | Dimensions |
|---|---|
| dx | Data elements, indicators, data set reporting rate metrics, |
| data element operands, program indicators, program data elements, | |
| program attributes, validation rules | |
| pe | ISO periods and relative periods (see “date and period format”) |
| ou | Organisation unit hierarchy |
| Organisation unit identifiers, keywords USER_ORGUNIT, | |
| USER_ORGUNIT_CHILDREN, USER_ORGUNIT_GRANDCHILDREN,
LEVEL- |
|
| and OU_GROUP- |
|
| co | Category option combo identifiers (use all
to get all items) |
| ao | Category option combo identifiers (use all
to get all items) |
The filter parameter defines which dimensions should be
used as filters for the data retrieved in the analytics query. Any
number of filters can be specified. The filter parameter should be
repeated for each filter to use in the query. A filter differs from a
dimension in that the filter dimensions will not be part of the query
response content, and that the aggregated values in the response will be
collapsed on the filter dimensions. In other words, the data in the
response will be aggregated on the filter dimensions, but the filters
will not be included as dimensions in the actual response.
# To include a list dimensions for data elements id, dataset ids
dx %.d% c('dimension-id-1', 'dimension-id-2')
pe %.d% 'LAST_YEAR'
ou %.d% 'USER_ORGUNIT'
# showing in the analytics
get_analytics(
dx %.d% c('siOyOiOJpI8', 'Lt0FqtnHraW', 'OoakJhWiyZp'),
pe %.d% 'LAST_YEAR',
ou %.d% c('qKzosKQPl6G')
)
# Using the startDate and endDate with organisation unit keyword 'USER_ORGUNIT'
get_analytics(
dx %.d% c('siOyOiOJpI8', 'Lt0FqtnHraW', 'OoakJhWiyZp'),
ou %.d% 'USER_ORGUNIT',
pe %.d% 'all',
startDate = '2023-07-01',
endDate = '2023-12-31'
)# Filter by period
pe %.f% 'LAST_YEAR'
# Filter by organisation unit
ou %.f% 'USER_ORGUNIT'
# showing in the analytics. filter by organisation unit with id 'qKzosKQPl6G'
# and period 'LAST_YEAR'
get_analytics(
dx %.d% c('siOyOiOJpI8', 'Lt0FqtnHraW', 'OoakJhWiyZp'),
pe %.f% 'LAST_YEAR',
ou %.f% 'qKzosKQPl6G'
)