“…However, when the three studies with Յ2 years follow-up were excluded, the decreased risk of recurrence with surgery became statistically significant (RR, 0.45; 95% CI, 0.22-0.93; I 2 ϭ 93%). Moreover, when older studies (Ͻ1980) were excluded in sensitivity analysis, 26,31,33,41 the results remained statistically significant (RR, 0.38; 95% CI, 0.16-0.90; I 2 ϭ 94%). No significant associations were found with other outcomes such as the risk of PE in four studies (RR 0.30; 95% CI, 0.06-1.46; I 2 ϭ 0%) and the proportion of patients satisfied (86% vs 82%; P ϭ .71); however, the small number of events makes these estimates imprecise.…”