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Table 4 Risk of bias according to JBI, the critical assessment tool, to longitudinal studies

From: White spot lesions: diagnosis and treatment – a systematic review

Author

1. Were the criteria for inclusion in the sample clearly defined?

2. Were the study subjects and the setting described in detail?

3.Was the exposure measured in a valid and reliable way?

4.Were objective, standard criteria used for measurement of the condition?

5.Were confounding factors identified?

6.Were strategies to deal with confounding factors stated?

7.Were the outcomes measured in a valid and reliable way?

8.Was appropriate statistical analysis used?

Kabaktchieva et al., 2014 [34]

Yes

Yes

Yes

Yes

In part

In part

Yes

In part

Hammad et al., 2012 [24]

Yes

Yes

Yes

Yes

In part

In part

Yes

Yes