Do Mothers Decide?: The Impact of Preferences in Healthcare
研究了挪威移民母亲的剖腹产偏好是否影响实际分娩方式，发现偏好有因果作用，但医疗风险仍是主因。
In this study we analyze whether immigrant mothers in Norway can influence their mode of delivery. Patient preferences were measured as the rate of Caesarean section from their home country, and by a survey question measuring the extent to which people believe they have freedom of choice and control over their lives in their home country. Preferences have a causal effect on the likelihood of Caesarean section. Medical risk factors are still the most important reasons for having a Caesarean section, but our regression estimates show that a substantial share of Caesarean sections is due to preferences as well.