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Table 1 Number of treatment initiations and one-year retention rate per calendar year (n = 6871)

From: From restrictive to more liberal: variations in mortality among patients in opioid maintenance treatment over a 12-year period

Year

Treatment initiations (n)

Men (%)

Mean age at first treatment initiation

One-year retention per year per treatment initiation (OMT naïve) (%)

1997

23

14 (61)

38

23 (100)

1998

141

88 (62)

38

124 (88)

1999

565

379 (67)

38

479 (85)

2000

459

303 (66)

37

384 (84)

2001

590

415 (70)

37

489 (83)

2002

682

478 (70)

37

478 (70)

2003

666

465 (70)

37

532 (80)

2004

630

456 (72)

36

530 (84)

2005

703

492 (70)

37

600 (85)

2006

661

471 (71)

37

537 (81)

2007

603

427 (71)

37

482 (80)

2008

506

349 (69)

36

411 (81)

2009

634

468 (74)

37

NA