Table 4

Sensitivity analysis: Firth logistic regression models for mortality by vitamin D level in those with levels measured at presentation (n=31 deaths)

All patients (n=161)
OR (95% CI)P value
Unadjusted0.98 (0.89 to 1.09)0.73
Model20.96 (0.85 to 1.09)0.52
Model 30.90 (0.76 to 1.07)0.26
  • Model 2: adjusted for age, sex, ever smoking and swab positivity.

  • Model 3: adjusted for age, sex, ever smoking, swab positivity and comorbidities.