Determinants of Secondary Hyperparathyroidism in Bariatric Patients after Roux-en-Y Gastric Bypass or Sleeve Gastrectomy: A Pilot Study

Table 1

Mean values of demographic, anthropometric, and biochemical characteristics of the sample at recruitment according to the type of surgery.

Variable	Mean ± SD or frequency (%)		ANOVA or
	RYGB	SG	P value
Age (years)			0.509
Gender (female sex)	72.7%	90.0%	0.038
Alcohol consumption	3.64%	2.50%	0.755
Current smoking	50.9%	47.5%	0.743
SBP (mmHg)			0.496
DBP (mmHg)			0.627
BMI before surgery (kg/m^2)			0.084

SBP: systolic blood pressure; DBP: diastolic blood pressure; BMI: body mass index.
Statistical significance was set at the level of P value <0.05.