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. 2024 Jan 9;24:135. doi: 10.1186/s12889-024-17657-0

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