The bias in the NYT article is striking, as is the bias in the conclusion/discussion of the article.
Here is the meat:
The differences in mortality of patients cared for by all international graduates and U.S. graduates (adjusted odds ratio: 0.99; 95 percent confidence interval: 0.94 to 1.04) were not statistically significant, nor were the differences between U.S.-citizen international graduates and U.S. graduates (adjusted odds ratio: 1.07; 95 percent CI: 0.99 to 1.16). However, the patients of non-U.S.-citizen international graduates had significantly lower mortality than U.S. graduates (adjusted odds ratio: 0.91; 95 percent CI: 0.86 to 0.97). Likewise, their patients had significantly lower mortality than the patients of U.S.-citizen international graduates (adjusted odds ratio: 0.85; 95 percent CI: 0.78 to 0.93).
Among the physician characteristics included in the analysis, the number of years since graduation was positively related to mortality, and the magnitude of the effect was substantial. Each additional year since graduation was associated with a 0.58 percent (95 percent CI: 0.34 percent to 0.81 percent) increase in the mortality of a physicians patients. Specialty board certification was associated with a 5.62 percent (95 percent CI: 0.003 percent to 10.67 percent) decrease in mortality, and treatment by a self-reported cardiologist was associated with a 6.1 percent (95 percent CI: 0.005 percent to 12.04 percent) increase in mortality.
Length-Of-Stay: Adjusting for all other variables, the patients cared for by U.S.-citizen international graduates and non-U.S.-citizen international graduates had significantly longer stays than patients of U.S. graduates.27 For the average stay of 5.28 days, this would represent an increase of 0.21 days (95 percent CI: 0.11 to 0.37 days) for patients of U.S.-citizen international graduates and 0.16 days (95 percent CI: 0.11 to 0.26 days) for patients of non-U.S.-citizen international graduates.
Holding all other variables constant, increasing years since medical school graduation was significantly associated with longer stays, while treatment by a cardiologist or physician holding a specialty board certificate was significantly associated with shorter stays. An urban location was also significantly associated with shorter hospital stays, while hospital and physician numbers of patients did not reach levels of statistical significance.