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Table 3 Annual number of GP contacts (mean (SD)) for primary and secondary care IBS patients and matched controls specified per year before and after the diagnosis of IBS

From: Comparison of medical costs generated by IBS patients in primary and secondary care in the Netherlands

  T = −3 Mean (SD) T = −2 Mean (SD) T = −1 Mean (SD) Mean annual before (SD) T = +1 Mean (SD) T = +2 Mean (SD) T = +3 Mean (SD) Mean annual after Mean (SD) Mean dif Mean (SD)
1. Consults and home visits during office hours Primary care patients 6 (6) 7 (6) 6 (6) 8 (6) 8 (7) 8 (7) 8 (6) 2 (6)
  Secondary care patients 6 (6) 7 (6) 10 (7) 8 (6) 9 (8) 9 (8) 10 (9) 9 (8) 1 (7)
  Primary care controls 4 (4) 5 (5) 4 (5) 4 (5) 4 (5) 5 (6) 4 (5) 0 (5)
  Secondary care controls 5 (5) 5 (6) 5 (5) 5 (5) 5 (5) 5 (5) 5 (6) 5 (5) 0 (5)
2. Consults and home visits outside office hours Primary care patients 0 (1) 0 (1) 0 (1) 0 (1) 0 (1) 0 (0) 0 (1) 0 (1)
  Secondary care patients 0 (1) 0 (1) 0 (1) 0 (1) 1 (2) 1 (1) 1 (2) 1 (2) 0 (1)
  Primary care controls 0 (0) 0 (1) 0 (1) 0 (0) 0 (1) 0 (1) 0 (1) 0 (1)
  Secondary care controls 0 (1) 0 (1) 0 (1) 0 (1) 0 (1) 0 (1) 0 (1) 0 (1) 0 (1)
3. Repeat prescriptions Primary care patients 4 (6) 4 (5) 4 (6) 5 (7) 5 (7) 6 (8) 5 (7) 2 (7)
  Secondary care patients 4 (6) 5 (6) 5 (6) 5 (6) 6 (7) 7 (8) 7 (8) 7 (7) 2 (7)
  Primary care controls 4 (6) 4 (6) 4 (6) 4 (5) 4 (5) 4 (6) 4 (5) 0 (5)
  Secondary care controls 4 (5) 4 (6) 4 (6) 4 (6) 4 (6) 4 (6) 4 (6) 4 (6) 0 (6)
  1. All p-values for the difference in means were not significant (p > 0.5). T = −3 indicates three years before diagnosis, T = +1 one year after diagnosis and so forth