TABLE 1

Distribution of Clinical Characteristics in the 4 Groups

Characteristic	Group A	Group B	Group C	Group D	P
Age (y)	59 ± 14	60 ± 12	60 ± 11	62 ± 12	NS^*
M/F	16/14	13/17	17/13	16/14	NS^†
Weight (kg)	69 ± 13	66 ± 13	70 ± 13	68 ± 11	NS^*
Height (cm)	169 ± 10	169 ± 11	171 ± 09	171 ± 08	NS^*
Body mass index (kg/m²)	24 ± 2	23 ± 2	23 ± 3	23 ± 2	NS^*
Glucose (mmol/L)	5.6 ± 0.7	5.3 ± 0.6	5.1 ± 0.7	5.3 ± 0.9	NS^*
Creatinine (mmol/L)	81 ± 11	82 ± 9	80 ± 10	81 ± 9	NS^*

NS = not statistically significant.
↵* ANOVA.
↵† χ² test.
Data are mean ± SD, or n.