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Table 2 Incidence rates of kidney diseases/urinary complaints in general practice before (period 1) and after (period 2) the albuminuria self-test program per 10,000 person years in the total population and in subgroups.

From: Increased incidence of kidney diseases in general practice after a nationwide albuminuria self-test program

 

Period 1

Period 2

Incidence Rate Ratio2 (95% CI)

 

Absolute numbers

Person-time incidence rate1

Absolute numbers

Person-time incidence rate1

 

ICPC U07: Urine symptoms/complaint

548

14.9

625

15.6

1.0 (0.9 - 1.2)

   18-45 years old

220

11.1

257

11.8

1.1 (0.9 - 1.3)

   46-65 years old

146

12.9

186

15.2

1.2 (0.9 - 1.5)

   > 65 years old

182

32.9

182

30.6

0.9 (0.8 - 1.1)

   Hypertension, yes

96

33.5

86

33.2

1.0 (0.7 - 1.3)

   Hypertension, no

452

13.3

539

14.4

1.1 (1.0 - 1.2)

   Diabetes mellitus, yes

61

52.4

49

46.2

0.9 (0.6 - 1.3)

   Diabetes mellitus, no

487

13.7

576

14.8

1.1 (1.0 - 1.2)

ICPC U14: Kidney symptoms/complaint

161

4.4

277

6.9

1.6 (1.3 - 1.9)*

   18-45 years old

63

3.2

117

5.4

1.7 (1.2 - 2.3)*

   46-65 years old

61

5.4

92

7.5

1.4 (1.0 - 2.0)*

   > 65 years old

37

6.7

68

11.3

1.7 (1.1 - 2.6)*

   Hypertension, yes

29

10.1

30

11.5

1.1 (0.7 - 2.0)

   Hypertension, no

132

3.9

247

6.6

1.7 (1.4 - 2.1)*

   Diabetes mellitus, yes

14

11.9

12

11.1

0.9 (0.4 - 2.2)

   Diabetes mellitus, no

147

4.1

265

6.8

1.6 (1.3 - 2.0)*

ICPC U27: Fears of urinary disease

424

11.6

450

11.3

1.0 (0.9 - 1.1)

   18-45 years old

207

10.5

204

9.4

0.9 (0.7 - 1.1)

   46-65 years old

123

10.9

137

11.2

1.0 (0.8 - 1.3)

   > 65 years old

94

17.0

109

18.3

1.1 (0.8 - 1.4)

   Hypertension, yes

87

30.7

51

19.9

0.6 (0.4 - 0.9)*

   Hypertension, no

337

10.0

399

10.7

1.1 (0.9 - 1.2)

   Diabetes mellitus, yes

37

32.0

17

16.1

0.5 (0.3 - 0.9)*

   Diabetes mellitus, no

387

10.9

433

11.2

1.0 (0.9 - 1.2)

ICPC U29: Urinary symptoms/complaint

94

2.6

112

2.8

1.1 (0.8 - 1.5)

   18-45 years old

32

1.6

47

2.2

1.3 (0.8 - 2.2)

   46-65 years old

27

2.4

28

2.3

1.0 (0.5 - 1.7)

   > 65 years old

35

6.3

37

6.2

1.0 (0.6 - 1.6)

   Hypertension, yes

14

4.8

16

6.1

1.3 (0.6 - 2.8)

   Hypertension, no

80

2.4

96

2.6

1.1 (0.8 - 1.5)

   Diabetes mellitus, yes

6

5.1

6

5.6

1.1 (0.3 - 4.1)

   Diabetes mellitus, no

88

2.5

106

2.7

1.1 (0.8 - 1.5)

ICPC U98: Abnormal urine test

132

3.6

400

10.0

2.8 (2.3 - 3.4)*

   18-45 years old

32

1.6

146

6.7

4.2 (2.8 - 6.3)*

   46-65 years old

53

4.7

142

11.6

2.5 (1.8 - 3.5)*

   > 65 years old

47

8.4

112

18.7

2.2 (1.6 - 3.2)*

   Hypertension, yes

38

13.2

31

11.9

0.9 (0.5 - 1.5)

   Hypertension, no

94

2.8

369

9.9

3.6 (2.8 - 4.5)*

   Diabetes mellitus, yes

26

22.3

27

25.3

1.1 (0.6 - 2.0)

   Diabetes mellitus, no

106

3.0

373

9.6

3.2 (2.6 - 4.0)*

ICPC U99: Urinary disease

507

13.8

1031

25.8

1.9 (1.7 - 2.1)*

   18-45 years old

51

2.6

120

5.5

2.1 (1.5 - 3.0)*

   46-65 years old

118

10.4

247

20.2

1.9 (1.6 - 2.4)*

   > 65 years old

338

61.1

664

112.5

1.8 (1.6 - 2.1)*

   Hypertension, yes

193

67.7

293

114.4

1.7 (1.4 - 2.0)*

   Hypertension, no

314

9.3

738

19.7

2.1 (1.9 - 2.4)*

   Diabetes mellitus, yes

113

97.7

139

132.7

1.4 (1.1 - 1.8)*

   Diabetes mellitus, no

394

11.1

892

22.9

2.1 (1.8 - 2.3)*

  1. 1The absolute number of cases divided by the 'time at risk' of all patients in specified period (per 10,000 person years)
  2. 2 The incidence rate ratio is the person-time incidence rate of period 2 divided by the person-time incidence rate of period 1
  3. * P < 0.05
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