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Table 4 Distribution of household direct costs and incidence of catastrophic payments for TB across income quartiles, Nigeria, 2011

From: Household catastrophic payments for tuberculosis care in Nigeria: incidence, determinants, and policy implications for universal health coverage

Indicator Income quartilea
  Q1 Q2 Q3 Q4 All
Frequency 174 66 134 78 452
Average direct costs of TB care (US$) b 128 144 158 208 157
Average annual household income (US$) 644 880 1313 2071 1123
Direct costs share of household income (%) 20 16 12 10 14
Average capacity to pay c (US$) 319 320 675 985 540
Households with catastrophic expenditure (%)
I = >10% of household income 88 100 45 31 65
II = ≥40% of capacity to pay 69 46 27 15 44
  1. US$ = United States dollar.
  2. aQuartile 1 is the poorest and Quartile 4 is the wealthiest.
  3. bBased on a currency exchange rate of 150 Nigeria Naira to US$1.00.
  4. cCapacity to pay = household income minus food expenditure (income after expenditures for food).