Table 1.

Time series analysis Interrupted autoregressive integrated moving average (ARIMA) models for influenza epidemic, COVID-19 epidemic, and lockdown periods.

Variables-	Parameter	SE	t (150)	p	CI 95%
Daily visits to ED
Influenza epidemic period
Omega	160.8	51.7	3.1	0.002	58.5	263.0
Delta	0.98	0.006	176.4	<0.001	0.97	0.99
COVID-19 epidemic period
Omega	124.7	110.8	1.1	0.3	−94.3	343.7
Delta	0.6	0.3	1.9	0.06	−0.03	1.3
Lockdown period
Omega	−160.2	23.8	−6.7	<0.001	<0.001	−113.1
Delta	1.0	0.005	210.6	<0.001	1.01	1.03
Daily through ED admissions to MSW
Influenza epidemic period
Omega	6.2	5.4	1.1	0.2	−4.4	16.8
Delta	1.0	0.006	177.6	<0.001	0.99	1.02
COVID-19 epidemic period
Omega	−31.7	15.4	−2.1	0.04	1.2	62.2
Delta	0.5	0.3	2.0	0.05	−1.1	−0.007
Lockdown period
Omega	−14.6	7.6	1.9	0.05	−0.4	29.6
Delta	1.0	0.02	48.2	<0.001	0.9	1.0
Daily through ED admissions to ICU
Influenza epidemic period
Omega	0.7	0.8	0.9	0.4	−0.8	2.1
Delta	−1.0	0.02	−39.7	<0.001	−1.0	−0.9
COVID-19 epidemic period
Omega	13.9	2.1	1.8	0.05	−0.3	8.1
Delta	0.8	0.1	−7.5	<0.001	−1.0	−0.6
Lockdown period
Omega	−13.2	2.3	5.3	<0.001	8.78	17.7
Delta	0.9	0.01	79.52	<0.001	0.9	1.0

Legend: ED, emergency department; ICU, intensive care unit; MSW, medical/surgical wards.