| Model 1: PCHCE | = | f(PCY, TIME, COUNTRY) |
| Model 2: PCHCE | = | g(PCY, TIME, COUNTRY, PUBFIN) |
| Model 3: PCHCE | = | i(PCY, TIME, COUNTRY, PUBFIN, PCBEDS, PCPHYS, PCNURSES) |
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