Differences between the number of relapses during the 3 month period after IVF and a control period 1 year before IVF
| Regression coefficient* | SE | p Value | |
| Intercept | −3.49 | 1.56 | 0.029 |
| 3 month period after IVF vs control period | 0.73 | 0.26 | 0.001 |
| Age at IVF (years) | 0.08 | 0.05 | 0.111 |
| Disease duration (years) | −0.09 | 0.04 | 0.021 |
| Type of recruitment | −0.46 | 0.35 | 0.198 |
The difference between the number of relapses after IVF and during the control period was significant (p=0.001) regardless of the age at IVF, disease duration at IVF and type of recruitment.
↵* The coefficients represent the mean differences in the logarithm of the number of relapses according to each covariate.
IVF, in vitro fertilisation.