Table 1 Description of study population (n = 6861)
Characteristic | N (%) |
|---|---|
Sex | |
Male | 3504 (51.1) |
Female | 3357 (48.9) |
Country | |
US-Colorado | 1110 (16.2) |
US-Georgia/Florida | 653 (9.5) |
US-Washington | 1001 (14.6) |
US-satellite sites | 7 (0.1) |
Germany | 436 (6.4) |
Finland | 1557 (22.7) |
Sweden | 2097 (30.6) |
Maternal Education | |
Basic Primary | 1252 (18.7) |
High School | 1648 (24.6) |
Beyond High School | 3800 (56.7) |
missing | 161 |
Age of Mother at Birth | |
< 25 years | 763 (11.1) |
25–29 years | 1997 (29.1) |
30–34 years | 2470 (36.0) |
> 35 years | 1631 (23.8) |
Number of room in house residence | |
≤ 3 rooms | 780 (11.7) |
3–6 rooms | 3641 (54.4) |
> 6 rooms | 2269 (33.9) |
missing | 171 |
Maternal Working Status at 9 months | |
Working | 2385 (35.7) |
Not Working | 4289 (64.3) |
missing | 187 |
Maternal Smoking Status at 9 months | |
Smoker | 618 (9.2) |
Non-smoker | 6092 (90.8) |
missing | 151 |
Age Child Started Daycare or joined social group | |
< 3 months | 2065 (30.7) |
3–6 months | 1647 (24.5) |
6–12 months | 1266 (18.8) |
12–18 months | 920 (13.7) |
≥ 18 months or no | 839 (12.5) |
missing | 124 |
Child Birthweight | |
SGA (< 2500 g) | 221 (3.3) |
AGA (2500–4000 g) | 5369 (90.2) |
LGA (> 4000 g) | 1102 (16.5) |
missing | 169 |
First Degree Relative with Type 1 Diabetes | |
Yes | 798 (11.6) |
No | 6063 (88.4) |
Single child in house at 9 months of age | |
Yes | 2806 (41.9) |
No | 3896 (58.1) |
missing | 159 |
Breastfeeding Duration | |
< 3 months | 1724 (25.2) |
3–6 months | 834 (12.2) |
6–9 months | 1420 (20.8) |
9–12 months | 1299 (19.0) |
12–15 months | 726 (10.6) |
15–18 months | 335 (4.9) |
> 18 months | 495 (7.3) |
missing | 28 |
Exclusive Breastfeeding Duration | |
< 3 months | 5201 (75.8) |
3–6 months | 1371 (20.0) |
6–9 months | 287 (4.2) |
9–12 months | 2 (0.0) |