Table 1.

Risk scoring system for the prediction of GTN in women with molar pregnancy*

Prognostic factor	Score
	0	1	2	3
U/S diagnosis	Partial	Complete	Recurrent
Uterine size for GA (months)	not more than 1	> 1	> 2	> 3
hCG level (mIU/mL)	< 50,000	> 50,000 to < 100,000	> 100,000 to < 1,000,000	> 1,000,000
Diameter of theca lutein cysts (cm)	‐	< 6	< 6 to < 10	> 10
Patient age (years)	‐	< 20	≥ 40	> 50
Medical complications**	‐	≥ 1	‐	‐

*From Berkowitz 1987

Low risk is defined as a score of < 4; high risk is defined as a score ≥ 4

U/S: ultrasound; GA: gestational age, hCG: β‐human chorionic gonadotrophin.

** hyperemesis, hyperthyroidism, pre‐eclampsia, trophoblastic embolisation, disseminated intravascular coagulation.