Table 1 Descriptive characteristics of the multiple/persistent RPs and never RP control participants (N = 639)

Gestational age (weeks)

37.67 (3.60)

37.69 (3.72)

-0.02 (-0.71–0.68)

0.967

Sex (% female)

52.9

49.2

0.55 ^a

0.459

Age at adult assessment

26.31 (1.68)

26.90 (1.96)

-0.59 (-0.96 – (-0.23))

0.002

Family SES at birth

Low %

Medium/High %

18.9

81.1

25.0

75.0

2.39 ^a

0.122

Cohort membership

BLS %

AYLS %

44.6

55.4

53.8

46.2

3.57 ^a

0.059

% with no social support from peers and friends ^b

20.7

30.0

5.94 ^a

0.019

% with no social support from romantic partners ^b

50.9

66.7

10.50 ^a

0.001