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Table 2 Comparison of the mean number of doctor visits for musculoskeletal pain in both groups (N = 39,516)

From: Musculoskeletal pain in people with and without type 2 diabetes in Taiwan: a population-based, retrospective cohort study

Year Diabetic group Non-diabetic group Z p c
n: 6586 n: 32930
Meana ± SD Meana ± SD
2001 0.51 ± 1.55 0.35 ± 1.23 −3.461 0.001
2002 0.69 ± 2.27 0.48 ± 1.63 −2.495 0.013
2003 0.74 ± 2.48 0.50 ± 1.67 −2.681 0.007
2004 0.72 ± 2.04 0.53 ± 1.75 −2.607 0.009
2005 0.69 ± 1.92 0.55 ± 1.85 −2.057 0.040
2006 0.58 ± 1.79 0.53 ± 1.82 −0.818 0.413
2007 0.60 ± 1.98 0.49 ± 1.74 −1.808 0.071
2008 0.75 ± 2.40 0.46 ± 1.75 −3.504 0.001
2009 0.77 ± 2.37 0.50 ± 1.94 −1.987 0.047
2010 0.77 ± 2.54 0.48 ± 1.60 −1.901 0.057
2001-2010 0.67 ± 2.12b 0.48 ± 1.68b −7.402 0.000
  1. aThe mean number of doctor visits for musculoskeletal pain in each year was calculated as the sum of the doctor visits of every individual due to musculoskeletal pain in each year divided by the total number of individuals in the group
  2. bThe mean number of doctor visits for musculoskeletal pain from 2001 to 2010 was calculated as the sum of the doctor visits of every individual due to musculoskeletal pain from 2001 to 2010 divided by the total number of individuals in the group multiplied by 10
  3. cp value was calculated by Mann–Whitney U test
  4. SD standard deviation