Now that the federal government plans to spend $19 billion to spur the use of computerized patient records, the challenge of adopting the technology widely and wisely is becoming increasingly apparent. Two articles, to be published on Thursday in the New England Journal of Medicine, point to the formidable obstacles to achieving the policy goal of not only installing electronic health records, but also using them to improve care and curb costs. One article reports that only 9 percent of the nation’s hospitals have electronic health records, based on a survey of nearly 3,000 hospitals. The study, financed by the...