However, the age distribution varies considerably across regions, suggesting some regions may face staffing crises much sooner than others. In all regions, urban areas tend to have three to four times the density of physicians as rural areas, with no rural area exceeding 18 per 10 000 population. This suggests not only that rural doctors are probably overworked, but also that adequate access to good quality care in rural areas may be compromised. As in most OECD countries, recent medical graduates tend to prefer working in urban areas, not only because they offer better financial and social opportunities, but also because the workload is higher in rural areas.