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Table 1 Factors related to the death of patients hospitalized due to COVID-19 in the population insured by Iran Health Insurance Organization until March 20, 2021 (based on the multiple logistic regression model)

From: National geographical pattern of COVID-19 hospitalization, case fatalities, and associated factors in patients covered by Iran Health Insurance Organization

Variable Survived Dead Odds Ratio P-Value
Variable Sub groups Frequency % Frequency % OR 95% CIa
Insurance fund Iranian Fund 18,070 15.43 3,298 15.43 Ref    
Rural Fund 100,405 87.81 13,943 12.19 0.75 0.72 0.79 P < 0.001
Other Social Strata 33,076 89.95 6,800 17.05 0.92 0.87 0.98 P < 0.001
Foreign Citizens Fund 1,445 77.44 421 22.56 1.45 1.28 1.66 P < 0.001
Universal health insurance 45,853 88.08 6,206 11.92 0.84 0.81 0.89 P < 0.001
Fund of the Civil Servants 62,328 83.99 11,880 16.01 0.82 0.79 0.87 P < 0.001
Age group  < 20 14,111 95.25 703 4.75 Ref    
20–30 13,092 95.88 562 4.12 1.15 1.03 1.3 P < 0.001
30–40 26,073 94.94 1,389 5.06 1.45 1.32 1.6 P < 0.001
40–50 32,335 92.93 2,459 7.07 2.09 1.92 2.3 P < 0.001
50–60 44,954 90.18 4,895 9.82 2.89 2.66 3.15 P < 0.001
60–70 54,362 85.48 9,232 14.52 4.39 4.05 4.78 P < 0.001
70–80 41,066 79.97 10,287 20.03 6.48 5.96 7.03 P < 0.001
 > 80 35,327 73.04 13,040 26.96 9.65 8.89 10.49 P < 0.001
Gender Male 131,635 84.64 23,883 15.36 Ref    
Female 129,685 87.41 18,684 12.59 0.81 0.8 0.84 P < 0.001
ICU Admission No 221,330 92.29 18,499 7.71 Ref    
Yes 39,990 62.43 24,068 37.57 7.49 7.32 7.67 P < 0.001
Hospital Type Private 3,607 88 492 12 Ref    
charity 690 83.43 137 16.57 1.73 1.37 2.19 P < 0.001
Government universities hospitals 254,024 85.93 41,584 14.07 2.08 1.87 2.31 P < 0.001
Other government hospitals 1,178 85.86 194 14.14 1.45 1.19 1.77 P < 0.001
Non-governmental public 1,823 91.92 160 8.08 0.98 0.8 1.2 P < 0.001
Month of admission 2020-February 705 85.56 119 14.44 Ref    
2020-March 16,283 86.17 2613 13.83 0.46 0.66 0.32 P < 0.001
2020-April 15,490 86.99 2317 13.01 0.33 0.48 0.23 P < 0.001
2020-May 13,138 88.49 1709 11.51 0.25 0.37 0.18 P < 0.001
2020-June 17,229 88.22 2300 11.78 0.31 0.44 0.21 P < 0.001
2020-July 25,414 86.13 4093 13.87 0.39 0.57 0.27 P < 0.001
2020-August 20,025 85.66 3351 14.34 0.39 0.56 0.27 P < 0.001
2020-September 19,300 86.9 2909 13.1 0.33 0.48 0.23 P < 0.001
2020-October 29,168 84.47 5361 15.53 0.42 0.6 0.29 P < 0.001
2020-November 39,523 83.64 7728 16.36 0.49 0.7 0.34 P < 0.001
2020-December 23,902 84.39 4420 15.61 0.37 0.53 0.26 P < 0.001
2021-January 15,390 86.51 2400 13.49 0.3 0.44 0.21 P < 0.001
2021-February 14,763 88.74 1874 11.26 0.26 0.37 0.18 P < 0.001
2021-March 10,990 88.89 1373 11.11 0.24 0.34 0.16 P < 0.001
  1. aConfidence Interval