• Chiang Yin Wong, Subramaniam Surajkumar, Yik Voon Lee, and Tze Lee Tan.
• Singapore Medical Association, Singapore.
• Singap Med J. 2020 Aug 1; 61 (8): 413-418.

IntroductionWe conducted a descriptive study to evaluate any changes in practice behaviour regarding the provision of hydrocortisone and lignocaine (H&L) injections among doctors and how an H&L injection is priced following a disciplinary proceeding decision. A doctor had been fined SGD 100,000 for failing to obtain informed consent before an H&L injection.MethodsWe performed a survey shortly after the disciplinary decision to ascertain: (a) the category of the respondent; (b) whether the respondent provided H&L injections and how much he charged before the decision; and (c) after the decision. All members of the Singapore Medical Association and College of Family Physicians Singapore are doctors and were invited to participate.Results1,927 doctors responded to the survey. Prior to the decision, 804 doctors did not perform H&L injections; this increased by 20.4% to 968 after the decision. The number of doctors who gave H&L injections decreased by 164 (14.6%), from the previous 1,123. Pre-decision, doctors who determined their own price for H&L injections charged a median pricing ≤ SGD 100. Post-decision, the median charge rose to > SGD 100 to SGD 200. At higher price bands, the number of doctors who charged > SGD 1,000 increased eight-fold, from eight to 65.ConclusionThe study demonstrated how a disciplinary decision can affect practice behaviour, and specifically how doctors may choose to not offer a service, an example of defensive medicine through avoidance behaviour. It also showed how prices for a service can rise following such a decision, which demonstrates the concept of negative general deterrence in sentencing.Copyright: © Singapore Medical Association.

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