Masseria, C.

country visit health doctor specialist income inequity survey difference distribution oecd countries equity finland doctor visits pro-rich number study indices access group inequality health care specialist visits service result pro-rich inequity utilization pro-poor people probability state research index portugal ireland doorslaer practitioner need differences physician population system hi index panel degree income groups university 21 oecd countries van doorslaer e oecd health project european specialist care concentration household sweden netherland 1996 echp 12 months insurance economic hi indices need-standardized use gp visits curve member greece patient pattern january norway need-standardized doctor utilization cross-country health care utilization concentration indices inequity indices physician visits mexico frequency department delivery