Table 3

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 training1.01 (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
 Employed1
 Student1.02 (0.89 to 1.16)
 Unemployed (>50% of the year)0.95 (0.79 to 1.14)
 Disability pension0.99 (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).