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Table 4 Results based on body mass index (BMI) and C-reactive protein (CRP)

From: Patient factors influencing the effect of surgeon-performed ultrasound on the acute abdomen

  BMI < 25 (n = 436) BMI ≥ 25 (n = 317) CRP < 10 (n = 403) CRP ≥ 10 (n = 367)
US (n = 223) [% (n)] Non-US (n = 213) [% (n)] P value US (n = 160) [% (n)] Non-US (n = 157) [% (n)] P value US (n = 219) [% (n)] Non-US (n = 184) [% (n)] P value US (n = 163) [% (n)] Non-US (n = 204) [% (n)] P value
Diagnostic accuracy 62 (135) 58 (119) 0.416 67 (105) 54 (85) 0.020 65 (142) 62 (112) 0.506 63 (98) 52 (103) 0.047
Admission 44 (97) 48 (102) 0.358 43 (69) 52 (82) 0.105 25 (55) 34 (62) 0.059 68 (111) 65 (132) 0.495
Ultrasound ordered 7 (15) 25 (53) <0.001 11 (18) 29 (45) <0.001 7 (16) 26 (48) <0.001 11 (18) 28 (57) <0.001
CT ordered 8 (18) 7 (15) 0.705 7 (11) 14 (22) 0.041 4 (8) 4 (8) 0.719 14 (22) 14 (29) 0.843
No other examination ordered 47 (104) 33 (70) 0.004 54 (85) 27 (42) <0.001 51 (110) 34 (62) 0.001 46 (75) 28 (57) <0.001
  1. Partially missing data in maximum nine patients per group and analysis