Table 3.

Factors associated with clinical presentations and underlying conditions

Presentations/conditions	Factors	Percentagea	χ2 p-value	Odds ratio	95% CI	p-value
Clinical presentations
Pneumonia	Delta	69.6%	<0.001*	8.127	3.080–21.443	<0.001*
	Omicron	22.0%
Sore throat	Delta	26.1%	0.004*	0.276	0.112–0.681	0.005*
	Omicron	56.1%
Congestion or runny nose	Delta	28.3%	0.016*	0.340	0.140–0.827	0.017*
	Omicron	53.7%
Headache	Delta	8.7%	0.025*	0.260	0.075–0.894	0.033*
	Omicron	26.8%
Shortness of breath	Asthma	50.0%	0.008*	10.857	1.320–89.312	0.027*
	No Asthma	8.4%
	Hematologic disease	66.7%	0.001*	22.000	1.766–273.997	0.016*
	No hematologic disease	8.3%
Underlying conditions
Hypertension	Delta	26.1%	0.049*	0.409	0.166–1.005	0.051
	Omicron	46.3%
	Age ≥ 60	64.5%	<0.001*	7.438	2.770–19.975	<0.001*
	Age 18–59	19.6%
Dyslipidemia	Delta	21.7%	0.015*	0.322	0.127–0.816	0.017*
	Omicron	46.3%
	Age ≥ 60	61.3%	<0.001*	7.283	2.693–19.699	<0.001*
	Age 18–59	17.9%
Obesity	Age ≥ 60	9.7%	0.028*	0.246	0.066–0.920	0.037*
	Age 18–59	30.4%
Diabetes	Age ≥ 60	32.3%	0.013*	3.968	1.278–12.324	0.017*
	Age 18–59	10.7%
Adjusted odds ratio
Dyslipidemia	Delta			0.361	0.130–1.005	0.051
	Omicron
	Age ≥ 60			6.819	2.456–18.931	<0.001*
	Age 18–59

a, Percentage of participants presented with the clinical presentations or conditions in each factor category; *, statistically significant at p ≤ 0.05