Table 2.

Rating of Systematic Assessment of Quality in Observational Research (SAQOR)^*

SAQOR Domains

Sample

comparison group

Exposure/outcome measurement

Representative

Source

Method

Power Calculation

Inclusion Criteria

Summary

Inclusion

Identifiable

Source

Matched or randomized

Statistical control

Summary

Exposure

Ng et al. (2017)

Y

Y

Y

N

N

A

N/A

N/A

N/A

N/A

N/A

N/A

Y

Ayazi et al. (2014)

Y

Y

Y

N

N

A

N/A

N/A

N/A

N/A

N/A

N/A

Y

Roberts et al. (2009)

Y

Y

Y

Y

N

A

N/A

N/A

N/A

N/A

N/A

N/A

Y

Karunakara et al. (2004)

Y

Y

Y

Y

N

A

N/A

N/A

N/A

N/A

N/A

N/A

Y

Peltzer (1999)

N

Y

Y

N

N

I

N/A

N/A

N/A

N/A

N/A

N/A

Y

Fox and Willis (2010)

N

Y

Y

N

N

I

N/A

N/A

N/A

N/A

N/A

N/A

Y

Tutlam et al. (2020)

N

Y

Y

N

Y

A

N/A

N/A

N/A

N/A

N/A

N/A

Y

Schweitzer et al. (2006)

N

Y

Y

N

N

I

N/A

N/A

N/A

N/A

N/A

N/A

Y

Totals

5

9

9

2

0

6

0

0

0

0

0

0

9

SAQOR Domains

Exposure/outcome measurement

Follow-up

Distorting influences

Data reporting

Quality

Outcome

Summary

Number lost

Reason for loss

Summary

Gender

Intervention

Stigma

Summary

Missing data

Clarity accuracy

Summary

Ng et al. (2017)

N

I

N/A

N/A

N/A

Y

N

N

I

Y

Y

A

Moderate

Ayazi et al. (2014)

N

I

N/A

N/A

N/A

Y

N

N

I

Y

Y

A

Moderate

Roberts et al. (2009)

N

I

N/A

N/A

N/A

Y

N

N

I

N

Y

I

Low

Karunakara et al. (2004)

N

I

N/A

N/A

N/A

Y

N

N

I

N

Y

I

Low

Peltzer (1999)

N

I

N/A

N/A

N/A

N

N

N

I

N

Y

I

Low

Fox and Willis (2010)

N

I

N/A

N/A

N/A

N

Y

N

I

N

N

I

Low

Tutlam et al. (2020)

N

I

N/A

N/A

N/A

N

N

N

I

N

Y

I

Low

Schweitzer et al. (2006)

N

I

N/A

N/A

N/A

Y

N

N

I

N

Y

I

Low

Totals

0

0

0

0

0

0

0

0

0

0

9

3

3 Moderate 6 Low

^*Adapted from Betancourt et al. (2013)