Table 3 Association between overall mortality (in-hospital and post-hospital) and socio-demographic parameters using unadjusted (crude) and adjusted Cox proportional hazard regression analysis

Variable

crude HR (95% CI)

P value

adjusted HR (95% CI)^a

P value

Sex

0.13

0.017

 Female

Ref.

Ref.

 Male

0.87 (0.73–1.04)

1.24 (1.04–1.48)

Age category

  < 40

Ref.

Ref.

Ref.

Ref.

 40–59

10.64 (6.79–16.66)

< 0.001

10.61 (6.77–16.63)

< 0.001

  > =60

53.55 (34.66–82.73)

< 0.001

53.97 (34.85–83.56)

< 0.001

Residency

< 0.001

0.002

 City

Ref.

Ref.

 Rural

1.66 (1.38–1.99)

1.33 (1.11–1.60)

PCR-test results

 negative

Ref.

Ref.

Ref.

Ref.

 positive

2.05 (1.49–2.84)

< 0.001

1.83 (1.32–2.53)

< 0.001

 unknown

1.38 (1.09–1.75)

0.006

1.40 (1.11–1.78)

0.005

Hospital profile

< 0.001

–

–

 Infectious disease

Ref.

 Provisional

1.95 (1.41–2.70)