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Table 1 Number of IVF treatments and outcomes according to three data sources, Finland 1996–1998.

From: Monitoring of IVF birth outcomes in Finland: a data quality study

  IVF statistics MBR1) IVF research data
Number of treated women n.a. n.a. 9175
Number of treatments 20 912 n.a. 24 318
Number of transfers 18 750 n.a. 19 246
Number of clinical pregnancies 4770 n.a. n.a.
Lost of follow-up 112 n.a. n.a.
Number of births 3535 3557 3594
- of which multiples, % 22.6 22.3 21.6
Number of newborns 4331 4383 4384
- of which twins, % 35.9 34.6 34.6
- of which triplets, % 1.0 2.1 1.1
  1. 1) MBR = Medical Birth Register. n.a. = not available