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. 2014 Mar 3;2014(3):CD010813. doi: 10.1002/14651858.CD010813.pub2

5. Study specific adjusted risk estimates: generations of contraceptives.

Study Comparison in RR (95% CI)
  1st vs non‐use 2nd vs non‐use 3nd vs non‐use 1st vs 2nd 3nd vs 2nd 1st vs 3nd
Andersen 1998 48.6 (5.6‐423)
Bloemenkamp 1995
Bloemenkamp 1999
Farmer 1996
Farmer 1998
Farmer 2000
Gronich 2011
Hedenmalm 2004
Heinemann 2002 8.1 (5.3‐12.5) 4.9 (3.5‐6.9) 4.3 (2.6‐7.2) 0.9 (0.6‐1.4)
Heinemann 2010 6.9 (4.3‐10.9) 8.1 (5.0‐13.1)
Herings 1999 3.5 (1.4‐8.8)
Jick 2006
Lewis 1996 6.2 (3.8‐10.2 3.4 (2.4‐4.6) 5.4 (3.9‐7.3) 1.6 (1.2‐2.2)
Lidegaard 2002 4.1 (2.4‐7.1) 2.9 (2.2‐3.8) 4.0 (3.2‐4.9) 1.5 (0.9‐2.7) 1.3 (1.0‐1.8)
Lidegaard 2011
Martinelli 1999
Parkin 2000
Samuelsson 2004
Todd 1999
van Hylckama Vlieg 2009
WHO 1995a WHO 1
WHO 1995a WHO 2
WHO 1995b