Table 2

- Comparison of gender, age, and levels and abnormal rates of serum CA-125 among the four groups with serous effusion.

Group	Gender (n)		Age (x±s)	CA-125[Median (P₂₅, P₇₅)]	Abnormal rate of CA-125 (%)
Group	Male	Female	Age (x±s)	CA-125[Median (P₂₅, P₇₅)]	Abnormal rate of CA-125 (%)
Group 1	43	12	78.7±10.2	71.2 (38.8, 173.9)	81.8
Group 2	73	55	71.0±8.9	99.8 (44.1, 175.4)	79.7
Group 3	56	47	80.9±9.8	52.0 (24.7, 107.4)	62.1
Total test statistic	9.415		34.109	13.182	11.364
Total p-value	0.009		<0.001	0.001	0.003
Group 1 versus group 2	χ²=7.415, p=0.006		t=7.717, p<0.001	H=14.551, p=0.826	χ²=0.111, p=0.740
Group 1 versus group 3	χ²=8.689, p=0.003		t=2.233, p=0.159	H=25.100, p=0.208	χ²=6.492, p=0.011
Group 2 versus group 3	χ²=0.164, p=0.685		t=9.950, p<0.001	H=39.651, p=0.001	χ²=8.695, p=0.003

P₂₅, the 25th percentile; P₇₅, the 75th percentile.