Comparison of Tubal Sterilization Procedures Performed by Keyless Abdominal Rope-Lifting Surgery and Conventional CO₂ Laparoscopy: A Case Controlled Clinical Study

Table 3

The comparison of the first 15 operations with the later operations in both surgical techniques. The data was presented with mean ± standard deviation values.

		First 15 cases	Following cases	P value*
KARS (𝑛=33)	Mean operation time (min)	35.80±12.18	21.05±8.55	0.001
	Mean abdominal cavity access time (min)	19.60±6.67	12.00±4.50	0.001
CO2 Laparoscopy (𝑛=38)	Mean operation time (min)	27.27±5.32	19.26±5.26	<0.001
	Mean abdominal cavity access time (min)	13.33±1.84	10.65±3.08	0.005

∗Student’s 𝑡-test (normal distribution), KARS: Keyless Abdominal Rope-lifting Surgery.
CO₂ laparoscopy: conventional multiport laparoscopy performed following the creation of pneumoperitoneum.