“…Total knowledge scores differed significantly by fellowship background (P = .004), frequency of providing care for cardiopulmonary bypass cases (P < .001), and frequency of providing care for patients less that 2 years of age (P < .001), but not by gender (P = .44), frequency of providing care for obstetric cases (P = .22), or years removed from residency (P = .50). Compared with median [IQR] knowledge scores among respondents without fellowship training (7 [4-12]), knowledge scores were higher among respondents with cardiac (11 [7][8][9][10][11][12][13][14][15], P < .001) and pediatric (12 [6][7][8][9][10][11][12][13][14][15], P = .001) but not critical care (8 [7-10], P = .50) or other (obstetric, regional, or pain management) fellowship training (6.5 [3][4][5][6][7][8][9], P = .57).…”