Tear Levels of Inflammatory Cytokines in Keratoconus: A Meta-Analysis of Case-Control and Cross-Sectional Studies

Table 4

Methodological quality of cross-sectional study using 11-item checklist of Agency for Healthcare Research and Quality.

Study year

Source of information

Inclusion and exclusion criteria of subjects

Time of identifying patients

Consecutiveness of subjects

Interference among outcomes

Assessment for quality assurance

Explain for exclusion

Assess and/or control confounding

Handle the miss data

Response rate of patients

Loss to follow-up

Total

Lonescu 2018

Y

Y

U

U

Y

U

Y

Y

Y

Y

Y

8

Pásztor 2016

Y

Y

Y

Y

Y

U

Y

Y

Y

Y

Y

10

Balasubramanian 2012

Y

Y

U

N

Y

U

Y

Y

Y

Y

Y

8

For each item, criteria fulfilled: N (no): 0; Y (yes): 1; U (unclear): 0.