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![Forest plot overall. Forest plot
displaying the mean difference in % HbA1c (POC-HPLC) with
corresponding 95% CI for each device comparison. Estimates were
synthesized using a random-effects model fitted with REML and
Hartung-Knapp adjustment. Study weights are shown, and individual
comparisons are ordered by mean bias. The pooled effect is
presented with its 95% CI and 95% PI. Heterogeneity statistics,
including I2 and τ2, are reported within the
figure [Q (df=19)=1,810.74]. HbA1c, hemoglobin A1c; POC,
point-of-care; HPLC, high-performance liquid chromatography; REML,
restricted maximum likelihood; CI, confidence interval; PI,
prediction interval.](/article_images/br/24/4/br-24-04-02120-g01.jpg)
