Table 3 Incidence rate ratios (IRR) with 95% confidence intervals (95%CI) estimated with Poisson regression with long COVID diagnosis by country of origin

Country/region of origin

 Sweden

1 (ref)s

1 (ref)

1 (ref)

1 (ref)

1 (ref)

1 (ref)

1 (ref)

 Afghanistan

0.67 (0.48–0.93)

1.19 (0.88–1.62)

1.19 (0.87–1.62)

0.66 (0.49–0.89)

1.00 (0.74–1.37)

1.04 (0.76–1.41)

0.66 (0.49–0.89)

 Finland

2.33 (1.97–2.75)

1.37 (1.15–1.62)

1.34 (1.14–1.59)

0.95 (0.81–1.11)

1.29 (1.09–1.53)

1.32 (1.11–1.56)

0.93 (0.80–1.09)

 Iran

1.38 (1.13–1.69)

1.27 (1.09–1.49)

1.27 (1.09–1.49)

0.69 (0.60–0.80)

0.99 (0.85–1.16)

1.14 (0.97–1.33)

0.64 (0.55–0.74)

 Iraq

1.15 (0.98–1.35)

1.29 (1.05–1.57)

1.29 (1.05–1.57)

0.87 (0.72–1.06)

1.13 (0.92–1.38)

1.21 (0.99–1.47)

0.80 (0.66–0.97)

 Somalia

0.66 (0.45–0.96)

0.98 (0.68–1.43)

0.97 (0.67–1.42)

0.44 (0.30–0.64)

0.82 (0.56–1.19)

0.86 (0.59–1.26)

0.44 (0.30–0.64)

 Syria

1.05 (0.88–1.25)

1.31 (1.10–1.55)

1.30 (1.09–1.54)

0.72 (0.62–0.85)

1.00 (0.84–1.19)

1.09 (0.91–1.29)

0.69 (0.59–0.81)

 Yugoslavia

2.23 (1.88–2.64)

1.83 (1.54–2.16)

1.81 (1.53–2.14)

1.12 (0.96–1.31)

1.47 (1.24–1.74)

1.73 (1.46–2.04)

1.08 (0.92–1.26)