Table 1 describes demographic characteristics of the participants stratified by whether they were randomly assigned a black or white patient. Participants assigned black vs white patients did not differ significantly, except that first- and second-year residents were more likely to be assigned white patients. Year of residency did not have any significant effect on either likelihood of recommending thrombolysis (chi-square P = .98) or on IAT scores however. Table 1 shows mean IAT scores for all three IATs by participants’ demographic characteristics. Physician race was the only consistent demographic predictor of IAT scores. Black physicians had mean scores on all three IATs near zero, whereas all other groups had scores in the positive, prowhite range. Emergency medicine residents also had somewhat less prowhite IAT sores on the general cooperativeness IAT. There was no difference in the IAT scores of participants randomized to black versus white patient vignettes. Table 1Baseline Characteristics and IAT Scores of Physician Participants Assigned vignette pictureMean IAT score*CharacteristicsBlackWhiteAttitude (good/bad)General cooperativenessCooperativeness with proceduresOverall For demographics (N = 220)n = 108n = 1120.36† (SD = 0.40)0.30† (SD = 0.39)0.22†
