Table 3

- Comparison of gender, age, and levels and abnormal rates of serum CA-125 among the four groups without 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	58	44	75.8±10.5	31.2 (18.1-68.3)	44.1
Group 2	131	50	67.8±7.3	18.0 (10.7-40.0)	28.2
Group 3	178	134	76.3±10.0	17.6 (11.3-30.1)	18.3
Group 4	445	275	69.0±8.1	8.6 (1.2, 12.1)	0.4
Total test statistic	12.601		69.316	487.826	250.03
Total p-value	0.006		<0.001	<0.001	<0.001
Group 1 versus group 2	χ²=7.077, p=0.008		t=7.956, p<0.001	H=183.969, p=0.001	χ2=7.396, p=0.007
Group 1 versus group 3	χ²=0.001, p=0.973		t=0.491, p=0.619	H=198.197, p<0.001	χ2=27.661, p<0.001
Group 1 versus group 4	χ²=0.919, p=0.338		t=6.754, p<0.001	H=613.759, p<0.001	χ2=310.316, p<0.001
Group 2 versus group 3	χ²=11.499, p=0.001		t=8.447, p<0.001	H=14.228, p=1.000	χ2=6.572, p=0.010
Group 2 versus group 4	χ²=7.008, p=0.008		t=1.202, p=0.096	H=429.790, p<0.001	χ2=197.834, p<0.001
Group 3 versus group 4	χ²=2.056, p=0.152		t=7.245, p<0.001	H=415.562, p<0.001	χ2=126.692, p<0.001

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