Table 6 Interaction between education and ownership of supplemental health insurance, and their effect on the level of out-of-pocket expenditure for dental care (2018 survey)
| Â | Ownership of a supplementary health insurance among those with an expense | Log coefficient (SE) for with supplementary insurance (vs without) stratified by education years | |
|---|---|---|---|
Years of education | No (N = 352) | Yes (N = 2349) | |
Log coefficient (SE) | Log coefficient (SE) | ||
0–8 (N = 96) | 1.0 Reference category | 1.11 (0.32)* |  |
9–12 (N = 718) | 0.61 (0.28) |  | 0.24 (0.16) |
13–15 (N = 539) | 0.94 (0.32)* |  | −0.18 (0.23) |
16+ (N = 1348) | 0.58 (0.35) |  | 0.06 (0.23) |
Log coefficient (SE) for 9–12(vs0–8)stratified by ownership of supplementary insurance |  | −0.27 (0.24) |  |
Log coefficient (SE) for 13–15(vs0–8)stratified by ownership of supplementary insurance |  | −0.36 (0.24) |  |
Log coefficient (SE) for 16+(vs0–8)stratified by ownership of supplementary insurance |  | −0.48 (0.24) |  |