Table 1 Relationship between interoception and BMI for individual interoception measures.

	n	Pooled r	95% CIs		Z	p val	I²%
A. Accuracy
Heartbeat count	42	−0.041	−0.088	0.005	1.73	0.082	4.5
Discrimination	12	−0.120	−0.219	−0.018	2.32	0.021	0.0
HCT confidence (sp)	8	−0.049	−0.208	0.113	0.60	0.551	0.0
IAS (sp)	2	−0.72	−0.151	0.009	1.75	0.080	0.0
BCQ (sp)	3	0.041	−0.061	0.143	0.80	0.424	0.0
MAIA noticing (sp)	5	−0.080	−0.152	−0.008	2.17	0.030	0.0
B. Sensibility
Porges	5	0.009	−0.081	0.062	0.26	0.798	2.5
MAIA listening	2	−0.233	−0.424	−0.021	2.15	0.031	–
C. Other
Confidence-accuracy	3	−0.105	−0.351	0.155	0.787	0.430	0
Water load	3	−0.028	−0.164	0.109	0.398	0.691	3.7
Respiratory	6	0.093	−0.440	0.578	0.322	0.747	0
EDI-IA	16	−0.079	−0.121	−0.038	3.73	0.001	9.1

n indicates number of effect sizes. Negative r value corresponds to higher BMI being associated with worse interoception (all interoception measures are standardised so that higher scores = better interoception).
(sp) self-perceived interoceptive accuracy. Heartbeat count heartbeat counting task, Discrimination heartbeat discrimination task, EDI-IA eating disorders inventory interoceptive awareness subscale, HCT-confidence heartbeat counting task confidence ratings, IAS interoceptive accuracy scale, BCQ body consciousness scale (private subscale), Porges Porges body perception scale (body awareness subscale), MAIA Multidimensional Assessment of Interoceptive Awareness Scale, Confidence-Accuracy correspondence between confidence and performance on heartbeat detection tasks, Water load water load task percentage satiation to total volume, Respiratory respiratory-based interoception perception tasks, Prediction error difference between interoceptive sensibility and interoceptive accuracy.

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