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Table 1 Key events surrounding withdrawal of Dalkon Shield IUD

From: Halo and spillover effect illustrations for selected beneficial medical devices and drugs

Product

Year

Event

Dalkon Shield IUD

1971

Dalkon Shield IUD introduced on U.S. market

1972

Public favorable opinion of IUDs peaks (40 %)

1974

50 % of market share for Dalkon Shield IUD- unique filament design

1974

Reports of pelvic inflammatory disease (PID), risk of septic abortion

1974

A.H. Robins Company removes Dalkon Shield from market

1976

Dalkon Shield sparks FDA medical devices act of 1976

1970s-1980s

Initial studies: all IUDs increase risk; Later studies: other IUDs safe

1983

FDA: women should remove Dalkon Shield due to PID

1985

A.H. Robins Company files for bankruptcy due to class action lawsuit

1985

Public favorable opinion declines to 20 %

1986

Other manufacturers pull IUDs from market due to economic reasons

1994

Public favorable opinion of all IUDs declines to 16 %

1996

Only 21 % of women associate term safe with the use of IUDs

2000s

Lack of doctors trained in IUD implantation