Table 2. Frequency of Patients with Normal Glucose Tolerance or Impaired Glucose Tolerance.

	Total	Normal glucose tolerance	Impaired glucose tolerance	Odds ratio
	N	N (%)	N (%)
OSAS	25	15 (60)	10 (40)	4.9
RLS	18	11 (61)	7 (39)	4.7
INS	17	14 (82)	3 (18)	1.6
CON	32	28 (88)	4 (12)

Normal Glucose Tolerance: 2h-PG≤140 mg/dl; Impaired Glucose Tolerance: 2h-PG≥140 mg/dl.

OSAS, Obstructive sleep apnea syndrome; RLS, Restless legs syndrome; INS, Insomnia; CON, controls.

χ² (3) = 7.95, p<0.05.