Author

Was the sample frame appropriate to address the target population?

Were study participants sampled in an appropriate way?

Was the sample size adequate?

Were the study subjects and the setting described in detail?

Was the data analysis conducted with sufficient coverage of the identified sample?

Were valid methods used for the identification of the condition?

Was the condition measured in a standard, reliable way for all participants?

Was there appropriate statistical analysis?

Was the response rate adequate, and if not, was the low response rate managed appropriately?

Total Quality score

Quality Level category

Bandara, J. S.

yes

yes

yes

yes

yes

yes

un clear

yes

unclear

7

high

Batisani, N.

yes

yes

yes

yes

yes

yes

yes

yes

unclear

8

high

Brizmohun, R.

yes

unclear

unclear

yes

unclear

yes

yes

yes

yes

6

medium

Brown, M. E.

yes

yes

yes

no

yes

yes

yes

yes

unclear

7

high

Cai, Y.

yes

no

unclear

no

yes

yes

yes

yes

yes

6

medium

Calzadilla, A.

unclear

yes

unclear

no

yes

yes

no

yes

unclear

4

medium

Chen, B.

yes

yes

unclear

no

no

yes

yes

yes

yes

6

medium

Calzadilla, A.

yes

yes

unclear

no

yes

yes

yes

yes

yes

7

high

Delince, J.

yes

yes

yes

yes

yes

yes

yes

yes

yes

9

high

Gohar, A. A.

yes

yes

unclear

yes

unclear

yes

un clear

yes

unclear

5

medium

Gohar, A. A.

yes

yes

unclear

yes

unclear

yes

un clear

yes

unclear

5

medium

Chung, U.

yes

unclear

yes

yes

yes

yes

yes

yes

yes

8

high

Lee, H. l.

Yes

yes

yes

yes

yes

yes

yes

yes

yes

9

high

Lee, H. L

yes

yes

yes

no

yes

yes

yes

yes

yes

8

high

Sassi, M.

yes

yes

unclear

no

yes

yes

yes

yes

yes

7

high

Skjeflo, S.

unclear

unclear

yes

no

yes

yes

yes

yes

unclear

5

medium

Sulser, T. B.

yes

yes

yes

yes

yes

yes

yes

yes

yes

9

high

Tigchelaar, M.

yes

yes

yes

yes

yes

yes

yes

yes

unclear

8

high

Wiebelt, M.

yes

yes

yes

yes

yes

yes

yes

yes

unclear

8

high

Wong, K. K. S.

not applicable

not applicable

unclear

yes

yes

yes

not applicable

yes

yes

5

medium

Wossen, T.

unclear

yes

unclear

yes

yes

yes

yes

yes

unclear

6

medium

Yaffa, S.

yes

yes

unclear

yes

yes

unclear

yes

no

unclear

5

medium

Zidouemba, P. R.

unclear

unclear

unclear

yes

unclear

yes

yes

yes

unclear

4

medium

Alvi, Sh.

Yes

yes

yes

Yes

Yes

Yes

Yes

Yes

Yes

9

high

Sam, A. G.

Yes

yes

unclear

Yes

Yes

Yes

yes

Yes

unclear

8

high

Putra, A. W.

yes

unclear

unclear

yes

yes

yes

unclear

yes

yes

6

medium