Table 4. Frequency of Patients with Normal or Elevated HbA1c (≥5.5%) & FPG (≥100mg/dl).

	Total	Normal HbA1c&FPG	Elevated HbA1c&FPG	Odds ratio
	N	N (%)	N (%)
OSAS	25	11 (44)	14(56)	20.0
RLS	17	11 (65)	6 (35)	8.5
INS	19	18 (95)	1 (5)	0.8
CON	33	31 (94)	2 (6)

OSAS, Obstructive sleep apnea syndrome; RLS, Restless legs syndrome; INS, Insomnia; CON, controls; FPG = Fasting plasma glucose.

χ² (3) = 25·31, p<0·001.