Table 1. Comparison of the demographic data, symptoms & signs, and laboratory tests between two different treatment modality groups.

Values are presented as mean ± standard deviation (median) or number (%).

Group S, operative treatment group; group C, nonoperative treatment group.

^a)Student t-test. ^b)Yates' contiunity correction. ^c)Mann-Whitney U test. ^d)Fisher exact test. ^**P < 0.01.