Table 2.

Clinical data on the 22 non-pregnant women with a history of cervical insufficiency

Patient number	Age	Termination of pregnancy before week 12		Spontaneous abortion <16 weeks		Spontaneous abortions 16 to 23+6 weeks		Births (≥24 weeks) gestational age
1	29		-		-	I	23+	II	27+
2	37		-		-		-	I	27+ (CS)
3	37		-		-	I	22+	II	37+ (Mc-C)
4	39	I	8+	III	Un	II	20+	IV	38+ (Mc-C)
				V	Un	VI	17+	VII	36+ (Mc-C)
5	27		-		-	I	22+	II	34+ (Abd-C, CS)
								III	38+ (Abd-C, CS)
6	30		-		-		-	I	24+ (CS)
								II	37+ (Mc-C)
								III	36+ (Mc-C, CS)
7	36		-	I	7+	III	23+	II	25+
								IV	33+ (Mc-C)
								V	35 (Abd-C, CS)
8	33		-	II	15+		-	I	25+
								III	38+ (Mc-C)
9	30		-	I	6+	II	21	III	37+ (Abd-C, CS)
								IV	36+ (Abd-C, CS)
10	36	I	6+	II	8+	III	19+	IV	24+
								V	36+ (Abd-C, CS)
11	31		-	I	12+	II	23+	III	39+ (Mc-C)
12	38		-		-	I	22+	II	37+ (Mc-C, CS)
								III	37+ (Mc-C)
13	32	II	6+		-		-	I	24+ (CS)
								III	35+ (Mc-C)
14	26		-		-	I	21+	II	38+ (McC)
15	43		-		-		-	I	25+
								II	36+ (Mc-C)
								III	38+ (Mc-C)
16	37	I	7+	II	8+		-	V	36+ (Emer-C week 22)
				III	7+			VI	38+ (Mc-C)
				IV	8+
17	43	I	6+	II	14+	V	23+	VI	39+ (Mc-C)
				III	10+			VII	39+ (Mc-C)
				IV	9+			IX	38+ (Mc-C)
				VIII	13+			X	40+ (Mc-C)
18	40	I	6+	III	7+	IV	21+		-
		II	8+	VI	6+	V	16+
19	29		-	-			-	I	28+ ( Emer-C week 19+4)
20	25		-	-			-	I	26+ (CS)
21	31		-	-		I	22+	II	37 (Mc-C)
22	39		-	I	7+	III	21+	-
				II	8+

I - X: The sequence of the pregnancies

8+, 16+ etc: Gestational age in weeks

Mc-C: Elective Mc Donald cerclage

Abd-C: Abdominal cerclage

Emer-C: Emergency cerclage on dilated or very short cervix

CS: Cesarean section

Un: Unknown gestational age