Table 2.

Comparison of primary and secondary outcomes measures between ALT and USG groups

CharacteristicOverall (n = 110)ALT Group (n = 55)USG Group (n = 55)P Valuea
Success rate (%)98 (89.1%)44 (80%)54 (98.2%)0.002
Successful first attempt (%)77 (70%)30 (54.5%)47 (85.5%)0.000
Number of attempts (mean ± SD)1.34 ± 0.551.51 ± 0.61.16 ± 0.420.001
Complications (%)13 (11.8%)10 (18.2%)3 (5.5%)0.039
  • a P < 0.05 is considered statistically significant.