The association between spontaneous abortion and educational level, income level and labour market attachment, respectively, in the Danish National Birth Cohort
| HR (95% CI) | |
| Educational level | |
| BA or more (>12 years) | 1 |
| Higher education (less than BA degree) | 1.03 (0.91 to 1.11) |
| Upper secondary education and vocational training | 1.01 (0.89 to 1.09) |
| Compulsory school (<10 years) | 1.13 (0.98 to 1.29) |
| Income quintile | |
| >80% | 1 |
| 60%–80% | 1.09 (0.99 to 1.21) |
| 40%–60% | 1.13 (1.02 to 1.26) |
| 20%–40% | 1.11 (1.00 to 1.23) |
| <20% | 1.13 (1.01 to 1.27) |
| Employment status | |
| Employed | 1 |
| Student | 1.02 (0.89 to 1.16) |
| Unemployed (>50% of the year) | 0.95 (0.79 to 1.14) |
| Disability pension | 0.99 (0.57 to 1.72) |
Risks are expressed in HR and are adjusted for maternal age and mutually adjusted for the different indicators of socioeconomic position (n=83 470).