Table 4. Multiple Poisson regression model for catastrophic expenditure.
| Variable | Relative risk | 95% confidence interval | p-value |
| Illness and care-seeking behavior | |||
| Average illness per child | 1.12 | (1.03–1.23) | 0.01 |
| Average illness per adult | 1.47 | (1.13–1.93) | 0.01 |
| Care-seeking behavior | |||
| Inpatient | 28.36 | (16.49–48.77) | <0.01 |
| Outpatient public | 2.93 | (1.66–5.16) | <0.01 |
| Outpatient private | 4.38 | (2.31–8.30) | <0.01 |
| Outpatient public and private | 7.03 | (3.37–14.66) | <0.01 |
| Self-medication/traditional healer | 1.00 | NA | |
| Household characteristics | |||
| Educational status of household head | |||
| No education | 2.35 | (1.25–4.41) | <0.01 |
| Primary | 1.62 | (0.88–3.00) | 0.1 |
| Secondary | 1.30 | (0.74–2.27) | 0.4 |
| Higher | 1.00 | NA | |
| Household consumption quintile | |||
| Quintile 1 (poorest) | 3.76 | (1.46–9.68) | <0.01 |
| Quintile 2 | 2.55 | (1.02–6.38) | 0.01 |
| Quintile 3 | 2.61 | (1.22–5.54) | 0.01 |
| Quintile 4 | 2.25 | (1.09–4.65) | 0.01 |
| Quintile 5 (richest) | 1.00 | NA | |