Table 1 Clinical and demographic characteristics, and atypical motor development at 6-, 12- and 24 months PTA

Perinatal factors (n = 139)

n

%

Sex: male

71

(51.1)

Twins

31

(22.3)

Has no older siblings

88

(63.3)

Intraventricular haemorrhage grade 1–2

13

(9.4)

Intraventricular haemorrhage grade 3–4

3

(2.1)

Periventricular leukomalacia

6

(4.3)

Sepsis

16

(11.5)

Bronchopulmonary dysplasia

12

(8.6)

mean

SD

Number of other diagnoses

1.7

(0.84)

Gestational age

29.7

(2.16)

Birth weight: grams

1383

(383)

Days of ventilation

1.70

(4.41)

Days of CPAP

16.06

(19.17)

Days with oxygen

9.69

(18.74)

Social background factors (n = 139)

 Mother’s age, years

30.99

(5.28)

 Mother’s education, years

15.24

14.51

(2.77)

(2.88)

 Father’s education, years

Scores on AIMS and PDMS-2

n

%

6 months (n = 137)

AIMS scores ≤ 5^th percentile

24

(17.5)

(n = 135)

PDMS-2 TMQ scores ≤ 5^th percentile

0

(0.0)

12 months (n = 129)

AIMS scores ≤ 5^th percentile

18

(13.9)

(n = 134)

PDMS-2 TMQ scores ≤ 5^th percentile

6

(4.5)

24 months (n = 130)

PDMS-2 TMQ scores ≤ 5^th percentile

14

(10.8)

PDMS-2 TMQ scores < 85

43

(33.1)

PDMS-2 TMQ scores < 70

6

(4.6)