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Table 1 Basic characteristics of participants

From: Chinese ICU physicians’ knowledge of antibiotic pharmacokinetics/pharmacodynamics (PK/PD): a cross-sectional survey

  Residents Attending physicians Vice chief physicians Chief physicians Total
Number of participants 420(33.9%) 456(36.7%) 276(22.3%) 88(7.1%) 1240
Years of working(Y) 2.2±1.6 6.8±3.1 13.9±3.9 15.3±5.3 7.4±5.8
Hospital grade
 Grade III-A 308(34.2%) 334(37.2%) 207(23.0) 51(5.6%) 900
 Grade III-B 84(38.4%) 69(31.5%) 40(18.3%) 26(11.8%) 219
 Grade II-A 26(22.4%) 50(43.1%) 29(25.0%) 11(9.5%) 116
 Grade II-B 2(40.0%) 3(60.0%) 0(0.0%) 0(0.0%) 5