Table 1 Characteristics of RM patients

RM (n = 575)

pRM(n = 393)

sRM (n = 182)

p-value

Age^a

34.5 ± 4.5

34.1 ± 4.7

35.3 ± 3.8

0.0037

Gravidity^b

4 (3/15)

3 (3/14)

3 (3/15)

< 0.001

Parity^b

0 (0/4)

0

1 (1/4)

< 0.001

No. of miscarriages^b

3 (3/14)

3 (3/14)

3 (3/14)

0.68

Time since last miscarriage^a

6.8 ± 8.9

5.7 ± 5.1

6.0 ± 5.5

0.42

BMI^a

24.3 ± 4.2

23.98 ± 4.1

24.82 ± 4.4

0.135

P4^a

10.6 ± 5.7

10.7 ± 5.6

10.3 ± 5.8

0.50

iRM (n = 248)

ipRM (n = 167)

isRM (n = 81)

p-value

Age^a

34.2 ± 4.9

33.6 ± 5.1

35.3 ± 4.2

0.0097

Gravidity^b

4 (4/15)

3 (3/10)

4 (4/15)

< 0.001

Parity^b

0 (0/4)

0

1 (1/4)

< 0.001

No. of miscarriages^b

3 (3/14)

3 (3/10)

3 (3/14)

0.89

Time since last miscarriage^a

6.1 ± 6.6

6.2 ± 7.3

5.8 ± 5.1

0.67

BMI^a

24.12 ± 4.5

23.25 ± 3.9

25.4 ± 5.1

0.029

P4^a

11.1 ± 6.0

11.1 ± 6.2

11.0 ± 5.7

0.90