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Table 3 The extracted glycated hemoglobin and extracted glycated albumin data obtained in the retrospective cohort study

From: Changes in antidiabetic prescription patterns and indicators of diabetic control among 200,000 patients over 13 years at a single institution in Japan

Year

2001

2005

2010

2013

rs*

p value*

Evaluated HbA1c (NGSP) (n)

170

170

170

170

  

HbA1c (NGSP)a (%)

8.2 ± 0.9

8.0 ± 0.9

7.9 ± 1.0

7.7 ± 1.1

−0.22

<0.01

HbA1c (IFCC)a (mmol/mol)

67 ± 10

64 ± 9

63 ± 11

60 ± 12

  

HbA1c (NGSP) groupb

 <6% (%)

0 (0.0)

0 (0.0)

1 (1)

1 (1)

  

 ≥6% and <7% (%)

14 (8)

15 (9)

21 (12)

45 (27)

  

 ≥7% and <8% (%)

51 (30)

73 (43)

79 (47)

72 (42)

  

 ≥8% (%)

105 (62)

82 (48)

69 (41)

52 (31)

 

<0.01#

Year

2003

2005

2010

2013

rs*

p value*

Evaluated glycated albumin (n)

136

170

170

168

  

Glycated albumina (%)

23.5 ± 3.6

22.8 ± 3.5

22.3 ± 3.9

21.5 ± 4.4

−0.14

<0.01

Glycated albumin quartileb

 <19.7% (%)

20 (15)

28 (17)

45 (27)

59 (35)

  

 ≥19.7% and <22.0% (%)

27 (20)

52 (31)

45 (27)

47 (28)

  

 ≥22.0% and <24.6% (%)

42 (31)

40 (24)

43 (25)

26 (16)

  

 ≥24.6% (%)

47 (35)

50 (29)

37 (22)

36 (21)

 

<0.01#

  1. Mean ± standard deviation or n (%)
  2. NGSP national glygohemoglobin standardization program; IFCC the international federation of clinical chemistry and laboratory medicine
  3. * Analysis results over 13 years; Additional file 3 shows this in detail
  4. # Using the Chi square test
  5. aYearly mean value for each patient
  6. bPercentages in this column may not add up to exactly 100% because of rounding up