AnxietyWit and Humor as TopicPreoperative PeriodPreoperative CareConscious SedationAnesthetics, IntravenousAnxiety DisordersDental AnxietyManifest Anxiety ScaleAnxiety, SeparationPhobic DisordersTreatment OutcomeTest Anxiety ScaleDepressionPostoperative ComplicationsRetrospective StudiesAnti-Anxiety AgentsPsychiatric Status Rating ScalesProspective StudiesPostoperative PeriodFollow-Up StudiesPanic DisorderDepressive DisorderRectal NeoplasmsQuestionnairesStress, PsychologicalPerformance AnxietyTime FactorsFearPredictive Value of TestsRisk FactorsPostoperative CareTomography, X-Ray ComputedPersonality InventorySeverity of Illness IndexComorbidityMood DisordersSurgical Procedures, ElectiveCognitive TherapyNeoadjuvant TherapyPrognosisCombined Modality TherapyIntraoperative Care