Table 1

First diagnoses of PDD by year of diagnosis and gender

Year

Number of cases

Person years at risk

Crude incidence rate (per 10000 person-years)

Male:Female incidence rate ratio

Age standardised incidence ratio (S.I.R)


All

M

F

All

M

F

All

M

F

All

M

F


1988

1

1

0

94474

49353

45121

0.11

0.20

0

8

10

0

1989

6

6

0

260978

135542

125436

0.23

0.44

0

19

22

0

1990

21

20

1

643830

332819

311012

0.33

0.60

0.03

18.7

28

32

8

1991

45

36

9

1118577

576722

541855

0.40

0.62

0.17

3.8

35

34

42

1992

45

37

8

1311605

675188

636417

0.34

0.55

0.13

4.3

31

31

33

1993

69

51

18

1376111

707674

668437

0.50

0.72

0.27

2.7

47

42

72

1994

77

61

16

1432528

735395

697134

0.54

0.83

0.23

3.6

52

49

64

1995

108

97

11

1476627

756200

720427

0.73

1.28

0.15

8.4

74

79

45

1996

102

85

17

1381242

705526

675716

0.74

1.21

0.25

4.8

78

78

77

1997

133

115

18

1283151

653791

629359

1.04

1.76

0.29

6.2

114

119

89

1998

192

152

40

1228058

624723

603335

1.56

2.43

0.66

3.7

180

173

218

1999

231

193

38

1121383

568937

552446

2.06

3.39

0.69

4.9

242

244

231

2000

211

179

32

935906

474344

461562

2.26

3.77

0.69

5.4

277

284

244

2001

169

139

30

567058

287574

279483

2.98

4.83

1.07

4.5

365

361

388

All

1410

1172

238

14231526

7283787

6947739

0.99

1.61

0.34

4.8

100

100

100


Smeeth et al. BMC Medicine 2004 2:39   doi:10.1186/1741-7015-2-39

Open Data