Child gender male
|
8
|
5 (62.5)
|
42
|
27 (64.3)
|
1.0
|
22
|
10 (45.5)
|
64
|
34 (53.1)
|
0.62
|
Gestational age weeks, median (range)
|
8
|
36 (26–37)
|
42
|
37 (31–41)
|
0.096
|
22
|
36 (24–40)
|
62
|
38 (28–43)
|
0.002
|
Prematurely born (< 37 gestational weeks at birth)
|
8
|
5 (62.5)
|
42
|
19 (45.2)
|
0.46
|
22
|
13 (59.1)
|
62
|
17 (27.4)
|
0.010
|
Birth weight grams, median (range)
|
8
|
2202 (590- 2855)
|
41
|
2653 (1614–4260)
|
0.014
|
22
|
2312 (525–3225)
|
62
|
2720 (1070–3390)
|
0.030
|
Low birth weight (< 2500 g at birth)
|
8
|
7 (87.5)
|
41
|
21 (51.2)
|
0.12
|
22
|
13 (59.1)
|
62
|
18 (29.5)
|
0.020
|
Gross type esophageal atresia
|
8
|
A = 3 (37.5) B = 1 (12.5) C = 4 (50.0)
|
42
|
C = 42 (100)
|
–
|
22
|
A = 9( 40.9) B = 7( 31.8) C = 6 (27.3)
|
64
|
C = 64 (100)
|
–
|
Associated anomaliesa
|
8
|
8 (100)
|
42
|
24 (57.1)
|
0.039
|
22
|
12 (54.5)
|
64
|
39 (60.9)
|
0.62
|
Cardiovascular
|
8
|
5 (62.5)
|
42
|
9 (21.4)
|
0.030
|
22
|
5 (22.7)
|
64
|
22 (34.4)
|
0.43
|
Anorectal
|
8
|
2 (25.0)
|
42
|
6 (14.3)
|
0.60
|
22
|
5 (22.7)
|
64
|
4 (6.3)
|
0.044
|
Urogenital
|
8
|
4 (50.0)
|
42
|
4 (9.5)
|
0.016
|
22
|
7 (31.8)
|
64
|
8 (12.5)
|
0.053
|
VACTERL associationb
|
8
|
3 (37.5)
|
42
|
6 (14.3)
|
0.14
|
22
|
3 (13.6)
|
64
|
11 (17.2)
|
1.0
|
Verified genetic disorder
|
8
|
1 (12.5)
|
42
|
3(7.1)
|
0.51
|
22
|
4 (18.2)
|
64
|
7 (10.9)
|
0.46
|
Reason for delayed reconstruction
|
Initital gap length, median cm (range)
|
3
|
4 (2–7)
| | | | | | | | |
Initital gap length, median vertebral bodies (range)
|
3
|
4 (3.5–4)
| | | |
19
|
4 (2–6)c
| | | |
Degree of prematurity, median (range)
|
2
|
29 (26–31)
| | | |
3
|
29 (24–30)
| | | |
Characteristics of parent acting as proxy
|
Parent respondent mother
|
8
|
5 (62.5)
|
42
|
37 (88.1)
|
0.11
|
22
|
18 (81.8)
|
63
|
56 (88.9)
|
0.46
|
Parental age median (range
|
8
|
40 (35–47)
|
42
|
37 (26–46)
|
0.09
|
22
|
46 (33–58)
|
63
|
44 (33–69)
|
0.26
|
Cohabitant partner
|
7
|
6 (85.7)
|
42
|
38 (90.5)
|
0.55
|
22
|
21 (91.5)
|
63
|
50 (79.4)
|
0.10
|
University/College education
|
8
|
4 (50.0)
|
42
|
23 (54.8)
|
1.0
|
22
|
13 (59.1)
|
63
|
31 (49.2)
|
0.47
|