Number of infants; sets of twins |
112 |
57 (51); 1 |
55 (49); 0 |
|
Median age in months at study visit (IQR), corrected for prematurity at birth |
6.0 (5.7 to 6.2) |
6.0 (5.8 to 6.2) |
5.9 (5.7 to 6.3) |
0.397 |
Cognitive scale |
|
|
|
|
Median score (IQR) |
10 (8 to 12) |
11 (8 to 12) |
10 (8 to 11) |
0.944 |
Poor cognitive outcomes |
22 (20) |
13 (23) |
9 (16) |
0.391 |
Communication scale |
|
|
|
|
Receptive communication, median score (IQR) |
11 (8 to 12) |
10 (9 to 12) |
11 (8 to 12) |
0.788 |
Poor receptive communication outcomes |
25 (22) |
13 (23) |
12 (22) |
0.900 |
Expressive communication, median score (IQR) |
11 (7 to 13.5) |
11 (9 to 14) |
10 (7 to 13) |
0.258 |
Poor expressive communication outcomes |
29 (26) |
13 (23) |
16 (29) |
0.448 |
Motor scale |
|
|
|
|
Fine motor, median score (IQR) |
13 (12 to 15) |
13 (12 to 15) |
13 (11 to 15) |
0.404 |
Poor fine motor outcomes |
5 (4) |
2 (4) |
3 (5) |
0.676 |
Gross motor, median score (IQR) |
11 (8 to 12) |
11 (9 to 12) |
11 (8 to 13) |
0.600 |
Poor gross motor outcomes |
12 (11) |
4 (7) |
8 (15) |
0.234 |
Social-emotional scale |
|
|
|
|
Median score (IQR) |
13 (11 to 15) |
13 (11 to 15) |
14 (11 to 16) |
0.218 |
Poor social-emotional outcomes |
8 (7) |
1 (2) |
7 (13) |
0.030 |
Adaptive behavior scale |
|
|
|
|
Communication, median score (IQR) |
11 (10 to 12) |
11 (9 to 12) |
11 (10 to 12) |
0.516 |
Poor communication outcomes |
1 (0.9) |
0 (0) |
1 (2) |
0.491 |
Health and safety, median score (IQR) |
10 (9 to 10) |
10 (9 to 10) |
10 (10 to 10) |
0.126 |
Poor health and safety outcomes |
4 (4) |
3 (5) |
1 (2) |
0.618 |
Leisure, median score (IQR) |
11 (9 to 12) |
10 (9 to 12) |
11 (10 to 13) |
0.056 |
Poor leisure outcomes |
10 (9) |
4 (7) |
6 (11) |
0.524 |
Self-care, median score (IQR) |
11 (10 to 12) |
10 (9 to 12) |
11 (10 to 12) |
0.256 |
Poor self-care outcomes |
7 (6) |
4 (7) |
3 (5) |
1.000 |
Self-direction, median score (IQR) |
10 (7 to 11) |
10 (7 to 11) |
10 (7 to 12) |
0.272 |
Poor self-direction outcomes |
29 (26) |
15 (26) |
14 (25) |
0.917 |
Social, median score (IQR) |
12 (11 to 13) |
11 (11 to 12) |
12 (11 to 13) |
0.016 |
Poor social outcomes |
2 (2) |
2 (4) |
0 (0) |
0.496 |
Motor, median score (IQR) |
11 (10 to 12) |
11 (10 to 12) |
11 (10 to 12) |
0.685 |
Poor motor outcomes |
12 (11) |
5 (9) |
7 (13) |
0.554 |
Any poor developmental outcome across all scales |
77 (69) |
40 (70) |
37 (67) |
0.740 |