Differences between the number of relapses during the 3 month period before and after IVF
| Regression coefficient* | SE | p Value | |
| Intercept | −4.08 | 1.73 | 0.021 |
| 3 month period before vs after IVF | 0.69 | 0.22 | 0.002 |
| Age at IVF (years) | 0.09 | 0.05 | 0.103 |
| Disease duration (years) | −0.07 | 0.04 | 0.082 |
| Type of recruitment | −0.37 | 0.39 | 0.348 |
The analysis was performed with a non-linear Poisson regression model with hazardous effects. This model was adjusted for the three following parameters: age at IVF, disease duration at IVF and type of recruitment.
The difference between the number of relapses before and after IVF was significant (p=0.002) regardless of age at IVF, disease duration at IVF or 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.