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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