Table 2 Sample Demographic Characteristics
From: A multilevel non-hierarchical study of birth weight and socioeconomic status
Characteristic | N | % |
|---|---|---|
Child Birth Weight (Mean ± SD) | 3524.0 ± 466.4 | |
Infant Gender | ||
Male | 1081 | (50.4) |
Female | 1063 | (49.6) |
Gestational Duration (Mean ± SD) | 40.2 ± 2.1 | |
< 37 weeks | 97 | (4.5) |
37-41 weeks | 1633 | (76.2) |
> 41 weeks | 395 | (18.4) |
Missing | 19 | (0.9) |
Birth Order | ||
1 | 827 | (38.6) |
2 | 766 | (35.7) |
3+ | 520 | (24.3) |
Missing | 31 | (1.4) |
Year of Birth | ||
1969-1973 | 248 | (11.6) |
1974-1978 | 695 | (32.4) |
1979-1983 | 1201 | (56.0) |
Adequate Prenatal Care | ||
Yes | 1546 | (72.1) |
No | 212 | (9.9) |
Missing | 386 | (18.0) |
Inadequate Weight Gain | ||
Yes | 179 | (8.3) |
No | 1858 | (86.7) |
Missing | 107 | (5.0) |
Maternal Age (Mean ± SD) | 27.5 ± 4.5 | |
Maternal Race | ||
White | 2062 | (96.2) |
Non-White | 82 | (3.8) |
History of Diabetes | ||
Yes | 66 | (3.1) |
No | 2027 | (94.5) |
Missing | 51 | (2.4) |
History of Hypertension | ||
Yes | 159 | (7.4) |
No | 1930 | (90.0) |
Missing | 55 | (2.6) |
Cervical Incompetence | ||
Yes | 42 | (2.0) |
No | 2073 | (96.6) |
Missing | 29 | (1.4) |
Prior Low Birth Weight Infant | ||
Yes | 94 | (4.4) |
No | 2008 | (93.7) |
Missing | 42 | (2.0) |
Prior Preterm Infant | ||
Yes | 128 | (6.0) |
No | 1963 | (97.5) |
Missing | 53 | (2.5) |
Mother Smoked During Pregnancy | ||
None | 1526 | (71.2) |
Average 1-10 cigarettes per day | 289 | (13.5) |
Average 11-20 cigarettes per day | 206 | (9.6) |
Average 20 + cigarettes per day | 83 | (3.9) |
Missing | 40 | (1.9) |
Mother Consumed Alcohol During Pregnancy | ||
None | 1256 | (58.6) |
During 1-2 trimesters | 209 | (9.8) |
During 3 trimesters | 615 | (28.7) |
Missing | 64 | (3.0) |
Maternal Education | ||
< HS Education | 78 | (3.6) |
HS Graduate | 763 | (35.6) |
Some College | 1302 | (60.7) |
Missing | 1 | (0.0) |
Paternal Occupation | ||
White collar | 1054 | (49.2) |
Blue collar | 694 | (32.4) |
Service occupations | 359 | (16.7) |
Missing | 37 | (1.7) |