Table 1 |
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|
Perinatal, maternal and adult phenotypic characteristics of the female MZ twins discordant for birth weight |
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|
Characteristic |
Heavier co-twins |
Lighter co-twins |
Range |
Pa |
|
N |
17 |
17 |
||
|
|
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|
Perinatal |
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|
Gestational age (weeks)b |
37.9 ± 2.4 |
37.9 ± 2.4 |
(34-42) |
|
|
Birth weight (g) |
2,619 ± 319 |
1,921 ± 278 |
(1,440-3,100) |
<0.0001 |
|
Umbilical cord insertionb |
||||
|
(Para)central |
12 (75%) |
4 (25%) |
||
|
(Para)marginal |
4 (25%) |
9 (56%) |
||
|
Velamentous |
0 (0%) |
3 (19%) |
0.008 |
|
|
Maternal |
||||
|
Maternal age (years) |
26.9 ± 5.4 |
26.9 ± 5.4 |
(18-43) |
|
|
Parity |
1.8 ± 1.0 |
1.8 ± 1.0 |
(1-4) |
|
|
Adult |
||||
|
Age (years) |
34.4 ± 7.1 |
34.4 ± 7.1 |
(22-45) |
|
|
Body height (cm) |
166.9 ± 6.1 |
165.5 ± 6.7 |
(155-177) |
0.13 |
|
Body weight (kg) |
62.7 ± 12.3 |
61.2 ± 14.2 |
(47.5-102) |
0.18 |
|
Body mass index (kg/m2) |
22.5 ± 3.8 |
22.3 ± 4.5 |
(16.7-33.7) |
0.60 |
|
|
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|
Continuous data expressed as mean ± standard deviation. Categorical data expressed as number of observations (%). aHeavy versus light calculated using a paired t-test for continuous data and Fisher's exact test for categorical data. bMissing for one twin pair. |
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|
Souren et al. Genome Biology 2013 14:R44 doi:10.1186/gb-2013-14-5-r44 |
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