showed a trendp = 0.052
Ks showed a trend toward a positive association (OR = 6.36, 95% CI 0.80–1.01, p = 0.052), whereas age and the length of infertility were not associated with pregnancy outcome (OR = 0.98, 95% CI 0.76–1.26, p = 0.889 and OR = 0.78, 95% CI 0.54–2.41, p = 0.741, respectively).