Table 3. Univariate hazard ratios for overall survival for predictors that were used in the nomogram.

Variable	Univariate hazard ratio (95% confidence interval)
Age (continuous, per decade)	1.14 (0.97, 1.35)
FIGO stage
FIGO IA	1 (ref.)
FIGO IB	12.1 (1.6, 90.1)
FIGO II	36.3 (5.0, 264.9)
FIGO III	67.6 (8.8, 518.5)
FIGO IV	111.1 (13.6, 903.8)
Tumour size
<2 cm	1 (ref.)
2–4 cm	6.7 (3.0, 14.7)
>4 cm	8.2 (3.8, 17.5)
Histologic subtype
Squamous cell carcinoma	1 (ref.)
Adenocarcinoma	1.5 (0.89, 2.6)
Other histologies	1.8 (0.7, 5.1)
Lymph node status
Negative lymph nodes	1 (ref.)
Any positive lymph nodes	4.8 (3.1, 7.7)
If any positive lymph nodes:
Lymph node ratio (continuous)	3.4 (1.3, 9.0)
Parametrial involvement
No	1 (ref.)
Yes	4.7 (2.9, 7.5)

Abbreviation: FIGO=International Federation of Gynecologists and Obstetricians.