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Table 5 Results of publication bias for the effects of psyllium on FBS, HbA1c, HOMA IR, and insulin according to intervention

From: The effect of psyllium on fasting blood sugar, HbA1c, HOMA IR, and insulin control: a GRADE-assessed systematic review and meta-analysis of randomized controlled trials

variable

Corrected effect size

Begg

Egger

Fail safe n test

Study trimmed

WMD

CI 95%

KENDALL TAU

Z value

P-value 2 tailed

intercept

CI95%

T value

Df

P-value

n

FBS

0

-6.89

-10.62, -3.16

-0.26

1.60

0.10

-0.89

-2.30, 0.51

1.33

17.00

0.19

320.00

Insulin

0

-2.08

-4.21, 0.03

-0.17

0.62

0.53

-1.27

-4.67, 2.12

0.88

7.00

0.40

34.00

HbA1c

0

-0.75

-1.21, -0.29

-0.13

0.52

0.60

-1.61

-4.25, 1.02

1.44

7.00

0.19

78.00

HOMA IR

0

-1.17

-2.11, -0.23

-0.37

1.23

0.21

-2.15

-6.28, 1.96

1.27

6.00

0.24

73.00

  1. FBS: fasting blood glucose; HbA1c: hemoglobin A1C; HOMA IR: Homeostatic Model Assessment of Insulin Resistance; CI: confidence interval; WMD: weighted mean difference