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Table 3 The posturography methodological quality checklist
| Item | Description | Scoring |
|---|---|---|
| Internal validity | ||
| 1 | Indicates reliability of outcome measures | A positive point was assigned if a minimum sampling duration of 90 s and/or 3–5 reps was used |
| 2 | Clear presentation of balance assessment | A positive point was assigned if replication of the experiment is possible based on the information in the article |
| 3 | Correction for confounding effect on dependent variables | Positive points were assigned if confounders were taken into account, or appropriate matching on these variables was performed |
| 3a Study controls for age | ||
| 3b Study controls for gender | ||
| 3c Study controls for height | ||
| 3d Study controls for body mass | ||
| Statistical validity | ||
| 4 | The use of appropriate statistical tests | A positive point was assigned if appropriate tests were used to assess differences in balance |
| 5 | Adequate sample size | A positive point was assigned if a minimum of 20 subjects per group were included |
| External validity | ||
| 6 | Sufficient information about the subject’s characteristics | Positive if information was provided about |
| 6a Adequate information regarding age | ||
| 6b Adequate information regarding gender | ||
| 6c Adequate information regarding height | ||
| 6d Adequate information regarding body mass | ||
| 6e Adequate information regarding severity of curve (Cobb angle) | ||
