Table 1 STROBE statement (Strengthening the Reporting of Observational Studies in Epidemiology)

Title and abstract

Yes

Yes

Yes

Yes

Yes

Introduction

Background/rationale

Yes

Yes

Yes

Yes

Yes

Objectives

Yes

Yes

Yes

Yes

Yes

Methods

Study design

Yes

Yes

Yes

Yes

Yes

Setting

Yes

No

Yes

Yes

No

Participants

Yes

Yes

Yes

Yes

Yes

Variables

Yes

Yes

Yes

Yes

Yes

Data sources

Yes

Yes

Yes

Yes

Yes

Bias

No

No

No

Yes

No

Study size

No

No

No

No

No

Quantitative variables

Yes

Yes

Yes

Yes

Yes

Statistical methods

Yes

Yes

Yes

Yes

Yes

Results

Participants

Yes

Yes

Yes

Yes

Yes

Descriptive data

Yes

Yes

Yes

Yes

Yes

Outcome data

Yes

Yes

Yes

Yes

Yes

Main results

Yes

Yes

Yes

Yes

Yes

Others analyses

Yes

Yes

Yes

Yes

Yes

Discussion

Key results

Yes

Yes

Yes

Yes

Yes

Limitations

No

Yes

Yes

Yes

Yes

Interpretation

Yes

Yes

Yes

Yes

Yes

Generalizability

Yes

Yes

Yes

Yes

Yes

Other information

Funding

No

No

No

No

No

TOTAL

18/22

18/22

19/22

20/22

17/22