Table 3.
Association between non-COVID-19 admissions and key predictor variables
Predictor variables | Outcome variables | ||
---|---|---|---|
Admission number by insured migrants—IRRa (95% CIb) | Admission number by non-insured migrants—IRRa (95% CIb) | Admission rate by insured migrants—IRRa (95% CIb) | |
Increased incidence number of COVID-19 in the present quarter (1,000 persons) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.01)*** |
Increased incidence number of COVID-19 in the previous quarter (1,000 persons) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.00) | 1.00 (1.00, 1.01)*** |
The number of hospital beds (1,000 beds) | 1.02 (0.99, 1.04) | 0.95 (0.93–0.97)*** | 0.86 (0.83–0.89)*** |
Region (Greater Bangkok = ref) | |||
• North | 0.92 (0.64, 1.32) | 0.31 (0.22, 0.45)*** | 9.99 (7.28, 13.70)*** |
• Northeast | 0.64 (0.45, 0.91)* | 0.32 (0.22, 0.45)*** | 27.48 (19.69, 38.35)*** |
• Central | 0.98 (0.68, 1.40) | 0.60 (0.41, 0.87)** | 5.68 (4.08, 7.91)*** |
• South | 0.95 (0.65, 1.37) | 0.64 (0.43, 0.94)* | 6.69 (4.80, 9.32)*** |
Wave (Pre-COVID-19 = ref) | |||
• Wild type | 1.51 (1.41, 1.62)*** | 1.19 (1.12, 1.27)*** | 1.78 (1.67, 1.89)*** |
• Alpha variant | 1.44 (1.33, 1.57)*** | 1.15 (1.07, 1.24)*** | 1.94 (1.80, 2.09)*** |
• Delta variant | 1.56 (1.43, 1.70)*** | 1.16 (1.07, 1.25)*** | 1.91 (1.76, 2.08)*** |
• Omicron | 1.77 (1.65, 1.90)*** | 1.26 (1.19, 1.35)*** | 2.09 (1.96, 2.24)*** |
*P < 0.05
**P < 0.01
***P < 0.00
aIncidence rate ratio
bconfidence interval