Table 5.

Correlation coefficient between SDSCA and HbA1c at study level and meta-analysis

Study	Correlation for SDSCA total score (95% CI)	N1	P-value	Correlation for SDSCA diet subscale (95% CI)	N2	P-value
Ahmad Sharoni et al. (13)	−0.498	200	< 0.001	−0.014	200	0.843
Chew et al. (14)	0.126	283	0.035	0.081	298	0.163
Jannoo et al. (16)	0.017	392	0.732	−0.010	392	0.850
Nur Khairul Bariyyah et al. (18)	0.046	442	0.335	−0.022	499	0.630
Papo et al. (19)	−0.100	331	0.069	−0.285	331	< 0.001
Siti Khuzaimah et al. (8)	0.020	388	0.699	−0.094	388	0.066
Tharek et al. (20)	−0.322	340	< 0.001	−0.177	340	0.001
Yap et al. (22)	−0.374	143	< 0.001	−0.467	143	< 0.001
Total		2519
Meta-analysis, fixed effect (95% CI)	−0.095 (−0.134, −0.056)		< 0.001	−0.100 (−0.138 to −0.061)		< 0.001
Meta-analysis, random effect (95% CI)	−0.140 (−0.286, 0.012)		0.072	−0.123 (−0.229 to −0.014)		0.028
Heterogeneity (I2)	93%			87%

Notes: CI = confidence interval; N1, N2 = sample sizes