Table 1 Demographic and related characteristics of mothers and probands
From: A reproductive history of mothers with spina bifida offspring-a new look at old issues
Race of mother | Number | Percent |
Caucasian | 237 | 87.5 |
African-American | 33 | 12.2 |
Asian/Pacific Islander | 1 | 0.4 |
Age of mother | Mean years | |
At proband's birth | 25.2 | |
At time of survey | 43.5 | |
Pregnancy outcome | Number (1) | Percent |
Live birth | 701 | 87.7 |
Spontaneous abortion | 95 | 11.9 |
Stillbirth | 3 | .4 |
History of spontaneous abortion | Number | Percent |
No | 205 | 75.6 |
Yes | 66 | 24.4 |
Pregnancy distribution | Range | Mean |
All pregnancies | 1 to 12 | 2.95 |
Live births | 1 to 12 | 2.59 |
Spontaneous abortions | 1 to 6 | 1.42 |
Partners of mothers | Number | Percent |
One partner | 211 | 77.9 |
Two partners | 48 | 17.7 |
Three partners | 9 | 3.3 |
Four partners | 3 | 1.1 |
Offspring by partner of mother | Number | Percent |
271 natural fathers of proband | 697 | 87.2 |
60 fathers of proband's half-siblings | 102 | 12.8 |
Proband gender | Number | Percent |
Female | 153 | 56.5 |
Male | 118 | 43.5 |
Proband lesion level | Number | Percent |
Thoracic | 110 | 40.6 |
Lumbar | 135 | 49.8 |
Sacral | 21 | 7.7 |
Missing | 5 | 1.8 |