Culture / Attention / Chile / Language / Critical Care / Delirium / Humans / Female / Male / Intensive Care Unit / Apache / Aged / Middle Aged / Observer Variation / Patient Care Team / Mechanical Ventilation / Reproducibility of Results / Intensive Care Units / Sensitivity and Specificity / Predictive value of tests / Critical Illness / Severity of Illness Index / Delirium / Humans / Female / Male / Intensive Care Unit / Apache / Aged / Middle Aged / Observer Variation / Patient Care Team / Mechanical Ventilation / Reproducibility of Results / Intensive Care Units / Sensitivity and Specificity / Predictive value of tests / Critical Illness / Severity of Illness Index