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Study characteristics

Country where the study was conducted

China

Study type

Retrospective observational study

Data Source

Medical records

Size of study popopulation

101

Study population description

Consecutive patients with laboratory-confirmed SARS-CoV-2 infection admitted to the Public Health Clinical Centre of Chengdu and West China Hospital, Sichuan University, between 16 January and 10 March 2020. Both institutions are certified covid-19 tertiary care hospitals and designated hub centres within Sichuan province.

Study population characteristics

Laboratory-confirmed cases were defined by a positive result on high-throughput sequencing or real-time reverse-transcriptase–PCR assay of nasal and/or pharyngeal swabs

Follow up type

Follow up

Results

Outcome related to coronavirus

COVID-19 (severe/fatal)

Number of cases

Case definition

need for ICU admission, mechanical ventilation and use of vasoactive agents, and death.

Associated factor category

Patient characteristics

Associated factor name

Smoking

Associated factor description

none

Risk reference category

Not present

Number of cases in the reference category

Total number of patients in the reference category

Risk comparison category

Present

Number of cases in the comparison category

Total number of patients in the comparison category

Type of measure of association

Odds ratio

Risk value (95% confidence interval)

3.280 (0.740-14.610)

Significant preventive factor

Significant risk factor

Is the risk adjusted?

Risk adjustment description

none

Other information

Comment

none

Article Quality

Average

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