Table 1.

Demographic data

Group	Number of cases (n)	Sex ratio (male/female)	Age (years)	Body mass index
Group R	30	14/16	69.9 ± 4.3	21.5 ± 2.3
Group P	30	13/17	68.6 ± 3.3	22.2 ± 2.4
P value		0.795	0.194	0.254