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Table 2 Insulin pulsatility analysis.

From: Delayed β-cell response and glucose intolerance in young women with Turner syndrome

 

TS (N = 12)

 

Control (N = 13)

  
 

Mean ± SD

Range

Mean ± SD

Range

P-value

Deconvolution

    

   Mass (pmol/L/pulse)

12.14 ± 3.93

7 - 17.5

15.49 ± 8.1

8 - 38.2

0.2

   Amplitude (pmol/L*min)

9.67 ± 3.15

5.5 - 13.9

12.35 ± 6.46

6.4 - 30.5

0.2

   Pulse interval (min/pulse)

7.92 ± 1.71

6.1 - 12.4

7.49 ± 0.95

6 - 9.5

0.3

   Basal secretion (pmol/L*min)

4.63 ± 2.25

4.48 - 2.09

4.48 ± 2.09

1.7 - 7.3

0.7

   Pulse fraction

0.28 ± 0.11

 

0.33 ± 0.11

 

0.1

Regularity Analysis

    

   ApEn (m = 1, r = 0.2 × SD)

1.34 ± 0.15

0.974 - 1.503

1.39 ± 0.058

1.32 - 1.51

0.3

   ApEn (m = 1, r = 1.0 × SD)

0.586 ± 0.19

0.035 - 0.772

0.637 ± 0.073

0.5 - 0.762

0.4

   Spectral power

7.03 ± 2.85

3.3 - 11.9

7.58 ± 2.2

4.3 - 12.8

0.4

   Spectral frequency

10.58 ± 2.27

8 - 13

10.69 ± 2.39

7 - 13

0.6

   Autocorrelation coefficient

0.198 ± 0.144

0.005 - 0.462

0.246 ± 0.129

0.05 - 0.468

0.3

   Autocorrelation frequency

9.0 ± 2.8

6 - 15

9.62 ± 2.29

6 - 13

0.05

  1. Parameters of pulsatility analysis based on deconvolution analysis, spectral analysis, and autocorrelation analysis and on the estimation of approximate entropy (ApEn) of individual insulin concentration time series in TS and controls.