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GENERIC STEP-BY-STEP APPROACH STEP TWO

QUALITY CONTROL FACTORS PERCENTAGE

COMPLETENESS
Target Population
What percentage of the study area is covered by spatial information on the target population at the local level?
What percentage of the spatial features have the required variable on the target population?
Government services
What percentage of the government services are in the spatial information compared to departmental lists?
What percentage of the government services are in the correct geographical location?
What percentage of the government services have a unique identifi er?
What percentage of the spatial features have information on the capacity of government services?
Road network
What is the percentage accuracy of the road dataset?
VALIDITY
Target Population
What percentage of the variables associated with the information on the target population is of the right type?
What percentage of the spatial features in the target population dataset are correctly classifi ed?
What percentage of the variables have information associated with the spatial features that are in the right range of values?
What percentage of the spatial features are duplicates?
Government services
What percentage of the variables associated with the information on the government services is of the right type?
What percentage of the spatial features in the government services dataset are correctly classifi ed?
What percentage of the variables have information associated with the government services points that are in the right range of
What percentage of the government service points are duplicates?
Road network
What percentage of the variables associated with the information on the road network is of the right range?
What is the percentage of the spatial features in the road database are correctly classifi ed?
What percentage of the variables have information associated with the government services points that are in the right range of
What percentage of the road segments are duplicates?
LOGICAL AND PHYSICAL CONSISTENCY
What percentage of the spatial features in the target population and their associated attributes are logically and physically consistent?
What percentage of the government service points and their associated attributes are logically and physically consistent?
What percentage of the road segments and their associated attributes are logically and physically consistent?
REFERENTIAL INTEGRITY
What is the percentage of the spatial features in the target population dataset have unique identifi er?
What percentage of the government service points have unique identifi er?
What percentage of the road segments have unique identifi er?
POSITIONAL ACCURACY

What percentage of spatial features in the target population dataset are in the correct geographic location?
What percentage of the government service points are in the correct geographic location?
What percentage of the road segments are in the correct geographic location?

Figure 15: Template for capturing the results of the quality control exercise

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