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Search strategy according to PICOS criteria (Population; intervention; comparison; outcome; study design)
| P | People with Chiari malformation type I diagnosis. No restriction on age, surgery status, culture |
| I | Any cognitive or neuropsychological assessment |
| C | Any group comparison or studies without sample comparison |
| O | Cognitive performance (cross-sectional and longitudinal studies) |
| S | Empirical studies (any sample size) |
