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Table 3 Age distribution of incident MS patients for 1998–2007: observed cases (OC) and estimated cases (EC) as well as percentage of completeness

From: Incidence of multiple sclerosis in Northern Lisbon, Portugal: 1998–2007

  

No. of patients

    

Incidence rates per 100,000

  

OC

  

Completeness%

 

Crude

Ascertainment corrected

  

SMH

GP

Both

EC

Total

SMH

GP

Both

Chapman correction

Crude

Ascertainment corrected

Age-adjusted point

Point

with 95% CI

with 95% CI

Age group

Person-years

            

0-14

262,940

0

0

0

-

-

-

-

-

0.000

0.00

-

-

15-24

281,340

6

3

4

3

16

62.5

43.8

81.3

16.600

4.62

5.69 (3.42-7.95)

-

25-34

304,060

4

6

5

4

19

47.4

57.9

78.9

19.000

4.93

6.25 (4.07-8.43)

-

35-44

258,800

13

7

5

15

40

45.0

30.0

62.5

40.167

9.66

15.46 (8.30-22.61)

-

45-54

294,740

1

5

0

5

11

9.1

45.5

54.5

11.000

2.04

3.73 (0.09-7.37)

-

55-64

268,780

0

1

1

0

2

50.0

100.0

100.0

2.000

0.74

0.74 (0.74-0.74)

-

65+

292,460

0

1

0

0

1

0.0

100.0

100.0

1.000

0.34

0.34 (0.34-0.34)

-

All ages

1,963,120

24

23

15

27

89

43.8

42.7

69.7

89.767

3.16a

4.53 (3.13-5.94)b

4.48 (3.54-5.41)d

All districts

1,963,120

24

23

15

34

96

40.6

39.6

64.6

96.500

3.16a

4.89 (3.49-6.29)c

-

  1. MS: multiple sclerosis; OC: observed cases; EC: estimated cases; SMH: Santa Maria Hospital; GP: general practitioners; CI: confidence interval.
  2. aCrude estimates; bascertainment-corrected incidence obtained from added age-specific N = 89 estimates; cascertainment-corrected incidence obtained from crude N = 96 estimates; dpopulation age-adjusted and capture-recapture corrected rates.