Table 1

Studies included in a meta-analysis on the impact of abdominal computed tomography in patients with acute lower quadrant pain

StudyStudy designComparisonOutcomesNo. patientsMale:female ratioMean age, yrCT technique
No CTCTStudyNo CTCTStudy
Antevil et al. (7)R, cohortCT v. no CTNegative appendectomy, sex63367:3347:5360:40NRNR29NR
Bendeck et al. (8)R, cohortCT v. no CTNegative appendectomy, perforation, sex46254:4654:46NRNRNR16.3Abdominal/pelvic
Bickell et al. (9)R, cohortCT v. no CTTime219NRNR48:52NRNR29.3NR
Brandt et al. (10)R, cohortCT v. no CTNegative appendectomy330NRNR55:45NRNR36Abdominal/pelvic
DeArmond et al. (11)R, cohortPre-CT v. CTNegative appendectomy, perforation76664:3660:40NR24.925.5NRAbdominal/pelvic
Fuchs et al. (12)R, cohortCT v. no CTNegative appendectomy, perforation, time, sex12160:4052:48NR31.638.4NRAbdominal
Harswick et al. (13)R, cohortCT v. no CTNegative appendectomy122NRNRNRNRNRNRNR
Herschko et al. (14)R, P, cohortCT v. no CTNegative appendectomy265NRNR51:49NRNR30.5Abdominal/pelvic
Holloway et al. (15)P, cohortCT v. no CTNegative appendectomy304NRNR40:60NRNRNRFocused appendiceal
Hong et al. (16)RCTCT v. no CTNegative appendectomy, perforation, time18268:3251:49NR3534NRAbdominal/pelvic
Jones et al. (17)R, cohortCT v. no CTNegative appendectomy, sex385NRNR66:34NRNR31Abdominal/pelvic
Lee et al. (18)R, cohortCT v. no CTTime766NRNR55:45NRNRNRNR
Lee et al. (19)RCTCT v. no CTNegative appendectomy, time8261:3966:3452:4833.335.134.1Abdominal/pelvic
Liu et al. (20)R, cohortCT v. no CTNegative appendectomy641NRNR55:45NRNR42.7NR
Mathis et al. (21)R, cohortCT v. no CTPerforation, time143NRNR61:3933.333.133.2Abdominal/pelvic
McDonald et al. (22)R, cohortPre-CT v. CTNegative appendectomy, perforation, time, sex22656:4460:40NR35.235.2NRNR
Menes et al. (23)R, P, cohortPre-CT v. CTperforation, time53748:5253:47NRNRNRNRNR
Naoum et al. (24)R, P, cohortPre-CT v. CTNegative appendectomy, perforation19468:3279:21NR3536NRNot recorded
Peck et al. (5)R, cohortPre-CT v. CTNegative appendectomy293NRNRNRNRNRNRAbdominal/pelvic
Perez et al. (25)R, cohortPre-CT v. CTNegative appendectomy, perforation, time21853:4760:40NR3333NRNR
Rao et al. (26)R, cohortPre-CT v. CTNegative appendectomy, perforation, sex70254:4661:39NR2927NRFocused appendiceal
Regimbeau et al. (27)R, cohortPre-CT v. CTNegative appendectomy, perforation15247:5354:46NR2932NRAbdominal/pelvic
Rhea et al. (28)R, cohortCT v. no CTNegative appendectomy, sex26879:2153:47NRNRNR33Abdominal/pelvic
Rosengren et al. (29)R, cohortCT v. no CTTime23461:3965:3561:39NRNR25NR
Schuler et al. (30)R, cohortCT v. no CTNegative appendectomy14952:4839:61NR17–6815–88NRNR
Styrud et al. (31)R, cohortPre-CT v. CTNegative appendectomy278NR53:47NRNR33NRAbdominal/pelvic
Torbati et al. (32)P, cohortCT v. no CTNegative appendectomy, perforation109NRNR46:54NRNR31Abdominal/pelvic
Vadeboncoeur et al. (33)R, P, cohortPre-CT v. CTNegative appendectomy54963:3768:32NR2826.7NRNR

  • CT = computed tomography; NR = not recorded; P = prospective; R = retrospective; RCT = randomized clinical trial.