Estimation of Insulin Resistance in Mexican Adults by the [¹³C]Glucose Breath Test Corrected for Endogenous Total CO₂ Production

Table 2

Correlation of 𝛿¹³CO₂ (‰) with variables associated with insulin resistance, before and after adjustment for total CO₂.

Variable	Before adjustment		After adjustment
	r	P	r	P
HOMA	−0.41	0.001	−0.26	0.048
Fasting glucose (mg/dL)	−0.45	0.000	−0.37	0.004
Fasting insulin (mg/dL)	−0.27	0.035	−0.12	0.361
Waist (cm)	−0.46	0.000	−0.19	0.143
BMI (weight/height^2)	−0.47	0.000	−0.23	0.081
Fat mass (%)	−0.29	0.024	−0.23	0.074

Abbreviations: HOMA, homeostasis model assessment; BMI, body mass index, % Fat mass, percentage of body fat mass determined by electric bioimpedance using a equation for a Mexican population.