Table 4. Efficacy parameters for semi-rigid and flexible catheters
  Group 1
Semi-rigid catheter
Group 2
Flexible catheter
Implantation rate 125/962 (13.0%) a 149/911 (16.4%) b
Clinical pregnancy rate 93/363 (25.6%) 90/340 (26.5%)
Miscarriage rate 16/93 (17.2%) 11/90 (12.2%)
Ectopic pregnancy rate 2/93 (2.2%) 5/90 (5.6%)
Take home baby rate 75/363 (20.7%) 74/340 (21.8%)
a,b Values with different letters inside the line differed significantly (P<0.05).