Table 4.

Univariate Survival Analysis (Kaplan-Meier): Survival Times of All Patients with Invasive Ovarian Carcinomas According to Clinicopathological Factors and Cytoplasmic or Membranous CD24 Expression

Characteristic	No. of cases	Mean survival time (months ± SE)	Median survival time (months ± SE)	Log rank
Cytoplasmic CD24 expression				0.0002
Negative	23	97.8 ± 11.8	n.r.
Positive	33	36.5 ± 6.3	30.1 ± 3.3
Membranous CD24 expression				0.94
Negative	5	66.0 ± 22.5	n.r.
Positive	51	65.8 ± 8.9	52.5 ± 13.1
Age at surgery (y)				0.015
≤60	30	82.8 ± 11.2	n.r.
>60	26	39.3 ± 7.2	32.7 ± 4.3
Histological grade (Silverberg)				0.007
G1	11	109.9 ± 10.3	n.r.
G2	23	36.1 ± 5.8	34.6 ± 7.9
G3	22	35.1 ± 5.1	37.9 ± 5.0
Histological type				0.02
Serous	29	66.3 ± 10.5	52.5 ± 12.1
Non-serous	15	69.2 ± 8.9	n.r.
Undifferentiated	12	20.2 ± 4.2	17.8 ± 8.4
pT				0.08
pT1	11	99.6 ± 8.5	n.r.
pT2	7	50.3 ± 11.6	52.5 ± 22.9
pT3	38	56.8 ± 10.7	37.9 ± 4.3
pN				0.19
pN0	14	66.8 ± 9.0	n.r.
pN1	17	29.7 ± 2.5	n.r.
pM				0.0004
pMX	52	69.6 ± 8.7	52.5 ± 13.7
pM1	4	9.4 ± 5.2	0.8 ± 5.3
FIGO stage				0.001
I	10	98.5 ± 9.5	n.r.
II	6	47.6 ± 12.5	52.5 ± 39.1
III	36	62.4 ± 11.4	37.9 ± 8.1
IV	4	9.4 ± 5.2	0.8 ± 5.3

n.r., not reached.