Table 1.
Characteristics of included sample of women with complete smoking data in both generations. Smoking was recorded in the Medical Birth Register beginning in 1982.
| First generation (G1) | Second generation (G2) | |
|---|---|---|
|
| ||
| Women total (n=54012) | % | % |
| Age at childbirth (yrs) | ||
| <20 | (7.5) | (10.2) |
| 20–24 | (36.5) | (59.2) |
| 25–29 | (33.2) | (30.6) |
| 30–35 | (16.1) | (-)a |
| 35–40 | (5.8) | (-) |
| >40 | (1.0) | (-) |
| Body Mass Index (BMI) (kg/m2) | ||
| <18 | (5.8) | (2.2) |
| 18–24 | (76.8) | (60.7) |
| 25–29 | (14.3) | (23.6) |
| 30–34 | (2.8) | (9.4) |
| 35–39 | (0.3) | (3.0) |
| >40 | (-) | (1.1) |
| Parity | ||
| 1 | (41.1) | (72.0) |
| 2 | (32.9) | (24.2) |
| 3 or higher | (26.0) | (3.8) |
| Country of birth | ||
| Sweden | (90.5) | (100.0) |
| Other | (9.5) | (-) |
| Gestational diabetes (GDM)b | ||
| No | (99.6) | (99.5) |
| Yes | (0.4) | (0.5) |
| Non-gestational diabetesc | ||
| No | (99.7) | (99.5) |
| Yes | (0.3) | (0.5) |
a
No cases in dataset.
b
Gestational diabetes recorded since 1987. For G1, the prevalence of GDM is calculated after that year.
c
Medical Birth Register does not distinguish between type 1 and type 2 diabetes.