“…A priori, user payments for certain health services and prescription drugs, in the form of co-payments (fixed amount), co-insurance rates (share of costs) and/or deductibles (patient reimbursement only above a given minimum threshold cost) can be expected to reduce service utilisation by effectively raising the price of healthcare at the point of use (depth of basic insurance). There is indeed a body of empirical research pointing to lower service use and reduced public health spending in the shorter term due to higher reliance on cost-sharing (Manning et al, 1987;Rubin and Mendelson, 1996;Zweifel and Manning, 2000;Goldman et al, 2007;Schokkaert and van de Voorde, 2011;Kenneally and Walshe, 2012). The longer term effects of higher cost-sharing on health expenditures remain controversial, however, as higher cost-sharing has been found to lead to lower use of needed medical care especially among low-income and high-risk populations, with adverse consequences for health status and potentially higher spending on more expensive care in the future (Manning et al, 1987;Gruber, 2006;Haviland et al, 2011;Rubin and Mendelson, 1996;Lundberg et al, 1998;Robinson, 2002;Jemiai et al, 2004;Kim et al, 2005).…”