|
Men evaluated by the draft board, n (%)
|
1000 (5.4%)
|
17 412 (94.6%)
|
18 412 (100%)
|
|
BPP score, median (interquartile range)
|
42 (35–48)
|
44 (38–50)
|
44 (38–50)
|
|
Proportion with a BPP score in the bottom quartile (%)
|
312 (31.2%)
|
4370 (25.1%)
|
4682 (25.4%)
|
|
Birth weight in grams, median (interquartile range)
|
3450 (3125–3760)
|
3510 (3160–3875)
|
3500 (3150–3875)
|
|
Gestational age, no. (%)
| | | |
|
Preterm (<37 weeks)
|
53 (5.3%)
|
648 (3.7%)
|
701 (3.8%)
|
|
Term (31–41 weeks)
|
708 (70.8%)
|
12 762 (73.3%)
|
13 470 (73.2%)
|
|
Post-term (≥42 weeks)
|
66 (6.6%)
|
1209 (6.9%)
|
1275 (6.9%)
|
|
Missing
|
2793 (16.0%)
|
173 (17.3%)
|
2966 (16.1%)
|
|
Small for gestational age, no. (%)
| | | |
|
Yes
|
17 (1.7%)
|
141 (0.8%)
|
158 (0.9%)
|
|
No
|
808 (80.8%)
|
14 385 (82.6%)
|
15 193 (82.5%)
|
|
Missing
|
175 (17.5%)
|
2886 (16.6%)
|
3061 (16.6%)
|
|
Apgar score at 5 minutes after birth, no. (%)
| | | |
|
<7
|
6 (0.6%)
|
99 (0.6%)
|
105 (0.6%)
|
|
≥7
|
908 (90.8%)
|
16 077 (92.3%)
|
16 985 (92.2%)
|
|
Missing
|
86 (8.6%)
|
1236 (7.1%)
|
1322 (7.2%)
|
|
Maternal age, n (%)
| | | |
|
≤ 20 years
|
100 (10.0%)
|
1638 (9.4%)
|
1738 (9.4%)
|
|
21–35 years
|
852 (85.2%)
|
14 794 (84.9%)
|
15 646 (84.9%)
|
|
> 35 years
|
48 (4.8%)
|
980 (5.6%)
|
1028 (5.6%)
|
|
Mothers’ marital status at subject′s birth, n (%)
| | | |
|
Married
|
595 (59.5%)
|
11 033 (63.4%)
|
11 628 (63.2%)
|
|
Unmarried
|
341 (34.1%)
|
5366 (30.8%)
|
5707 (31%)
|
|
Missing
|
64 (6.4%)
|
1013 (5.8%)
|
1077 (5.9%)
|
|
Birth order, n (%)
| | | |
|
1
|
320 (32.0%)
|
6063 (34.8%)
|
6383 (34.7%)
|
|
2
|
368 (36.8%)
|
6148 (35.3%)
|
6516 (35.4%)
|
|
3
|
183 (18.3%)
|
3173 (18.2%)
|
3356 (18.2%)
|
|
4+
|
129 (12.9%)
|
2026 (11.6%)
|
2155 (11.7%)
|
|
Missing
|
0 (0%)
|
2 (0.01%)
|
2 (0.01%)
|
|
Mode of delivery, no. (%)
| | | |
|
Vaginal
|
796 (79.6%)
|
14 170 (81.4%)
|
14 966 (81.3%)
|
|
Caesarean
|
119 (11.9%)
|
1626 (9.3%)
|
1745 (9.5%)
|
|
Forceps or vacuum extraction
|
85 (8.5%)
|
1616 (9.3%)
|
1701 (9.2%)
|
|
Hearing score at conscription, no. (%)
| | | |
|
Severe hearing impairment
|
78 (7.8%)
|
754 (4.3%)
|
832 (4.5%)
|
|
Moderate hearing impairment
|
274 (27.4)
|
3902 (22.4%)
|
4176 (22.7%)
|
|
No hearing impairment
|
641 (64.1%)
|
12 653 (72.7%)
|
13 294 (72.2%)
|
|
Missing
|
7 (0.7%)
|
103 (0.6%)
|
110 (0.6%)
|
