Table 1.
Distribution of Apgar scores in the population
| Parameter | Apgar 5 min (0–6) | Apgar 5 min (7–10) | P (χ2 test) |
|---|---|---|---|
| Body mass index | |||
| <18.50 | 3.1 | 4.0 | <0.001 |
| 18.50–24.99 | 56.7 | 64.4 | |
| 25.00–29.99 | 24.1 | 21.5 | |
| ≥30.00 | 16.1 | 10.1 | |
| Age (years) | |||
| ≤19 | 4.4 | 3.5 | <0.001 |
| 20–35 | 82.4 | 86.7 | |
| ≥36 | 13.2 | 9.8 | |
| Previous live births | |||
| 0 | 55.1 | 48.4 | <0.001 |
| ≥1 | 44.9 | 51.6 | |
| Smoking | |||
| No | 80.4 | 83.9 | <0.001 |
| Yes | 19.6 | 16.1 | |
| Smokers | |||
| ≤10 cigarettes per day | 69.2 | 73.1 | <0.01 |
| ≥11 cigarettes per day | 30.8 | 26.9 | |
| Occupation of the mother | |||
| Housewife | 26.4 | 24.7 | <0.001 |
| In training | 5.0 | 4.2 | |
| On welfare support | 7.1 | 6.2 | |
| Unskilled laborer | 6.3 | 5.6 | |
| Skilled worker, public or private employee | 45.3 | 47.4 | |
| Highly skilled worker, medium level public or private employee, self-employed with small or medium size business | 8.5 | 10.4 | |
| High level public employee, very highly skilled employed, self-employed with large business (including independent professionals) | 1.4 | 1.5 | |
| Country of origin of the mother | |||
| Germany | 87.3 | 89.8 | <0.001 |
| Central and Northern Europe (excluding Germany), North America | 0.9 | 0.9 | |
| Mediterranean region | 2.3 | 2.2 | |
| Eastern Europe | 3.0 | 2.4 | |
| Middle Asia (including Turkey, Afghanistan, and Pakistan), North Africa (Arab countries) | 3.9 | 3.1 | |
| Asia (excluding Middle Asia) | 1.1 | 0.8 | |
| Other | 1.4 | 0.8 | |
| Single mother | |||
| Yes | 16.4 | 13.3 | <0.001 |
| Worked during pregnancy | |||
| Yes | 43.7 | 48.9 | <0.001 |
n = 465,964 singleton pregnancies of 37–41 weeks’ gestation. Frequencies of Apgar scores are given in percent