Inequities in Household Out-Of-Pocket Spending Among Urban Slum Dwellers in Southeast Nigeria.

In Enugu, there was an increasing trend in the utilization of all types of health providers by the richest quintiles compared to the poorest, with usage 2.2, 1.1, and 1.9 times higher for formal, informal, and combined formal/informal health services, respectively ( Figure 2 ).

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