Table 2.

Association of ESS score with risk variables

Univariate analysis
Parameters	ESS score
	Negative (<11)		Positive (≥11)		OR	95% CI	p-value
	n	%	n	%
Age:
≤50	23	74.2	8	25.8	1.00
>50	51	82.3	11	17.7	0.62	0.22–1.75	0.36
BMI:
<25	12	80.0	3	20.0	1.00
≥25	62	79.5	16	20.5	1.03	0.26–4.10	0.96
Gender:
Male	30	75.0	10	25.0	1.63	0.59–4.49	0.34
Female	44	83.0	9	17.0	1.00
Smoking:
Never smoked	28	77.8	8	22.2	1.00
Ex-smoker	22	73.3	8	26.7	2.28	0.54–9.59	0.26
Current smoker	24	88.9	3	11.1	2.90	0.68–12.37	0.15
Hypertension:
Yes	28	77.8	8	22.2	1.19	0.43–3.33	0.73
No	46	80.7	11	19.3	1.00
Arrhythmia:
Yes	12	85.7	2	14.3	0.61	0.12–2.98	0.54
No	62	78.5	17	21.5	1.00
Diabetes:
Yes	12	70.6	5	29.4	1.84	0.56–6.09	0.31
No	62	81.6	14	18.4	1.00
IHD:
Yes	4	57.1	3	42.9	3.28	0.67–16.13	0.13
No	70	81.4	16	18.6	1.00
CKD:
Yes	6	75.0	2	25.0	1.33	0.25–7.20	0.74
No	68	80.0	17	20.0	1.00

BMI = body mass index; CKD = chronic kidney disease; ESS = Epworth sleepiness score; IHD = ischaemic heart disease