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Fig. 3 —Graph shows Kaplan-Meier analysis for cumulative stability of
catheter according to catheter placement method. 
= long tapered
catheter placement method, censored cases; 
= conventional method,
censored cases; X = fixed-catheter-tip method, censored cases. Stability rates
in patients treated with long tapered catheter placement method were
significantly higher than those for patients treated with conventional method
(p = 0.0208 using log-rank test) but were similar to rates for those
treated with fixed-catheter-tip method.
