Table 1

Crude incidence rates and adjusted rate ratios for first ever eating disorder diagnosis derived from Poisson regression analysis

First ever incidence
Individuals (n, %)Crude incidence rate*
(95% CI)
Incidence rate ratio†
(95% CI)
Sex
 Male439 (9.2)17.7 (16.1 to 19.4)-
 Female4336 (90.8)189.2 (183.7 to 195)10.8 (9.7 to 12.0)
Age
 11 to 151425 (29.8)80.2 (76.1 to 84.5)0.6 (0.5 to 0.6)
 16 to 202348 (49.2)141.0 (135.4 to 146.9)-
 21 to 241002 (21.0)75.3 (70.7 to 80.1)0.5 (0.5 to 0.6)
Deprivation
 1 (least)1203 (25.2)115.8 (109.3 to 122.5)1.5 (1.4 to 1.7)
 21044 (21.9)105.2 (98.9 to 111.8)1.4 (1.2 to 1.5)
 3884 (18.5)97.5 (91.2 to 104.2)1.2 (1.1 to 1.4)
 4953 (20.0)97.8 (91.7 to 104.2)1.2 (1.1 to 1.4)
 5 (most)691 (14.5)80.3 (74.4 to 86.5)-
Year
 2004475 (9.9)117.5 (107.1 to 128.5)-
 2005462 (9.7)107.6 (98 to 117.9)0.9 (0.8 to 1.0)
 2006491 (10.3)110.7 (101.1 to 120.9)0.9 (0.8 to 1.1)
 2007526 (11.0)114.4 (104.9 to 124.6)1.0 (0.9 to 1.1)
 2008499 (10.5)106.8 (97.7 to 116.6)0.9 (0.8 to 1.0)
 2009478 (10.0)101.3 (92.4 to 110.8)0.8 (0.8 to 1.0)
 2010408 (8.5)87.3 (79.1 to 96.3)0.7 (0.6 to 0.8)
 2011419 (8.8)92.6 (83.9 to 101.9)0.7 (0.6 to 0.9)
 2012394 (8.3)89.6 (81 to 98.9)0.7 (0.7 to 0.8)
 2013357 (7.5)88.9 (79.9 to 98.6)0.7 (0.6 to 0.9)
 2014266 (5.6)79.3 (70 to 89.4)0.6 (0.5 to 0.8)
  • Total study Population=1 135 038 individuals.

  • *Per 100 000 person years.

  • †Adjusted for calendar year, sex, age group and deprivation 1(least).