Measuring symptoms in gastrointestinal cancer: a systematic review of assessment instruments.

PURPOSE: It is critical for gastrointestinal cancer researchers and clinicians to have access to comprehensive, sensitive and simple-to-use symptom measures that allow them to understand and quantify the subjective patient experience. Development and validation of such scales requires training in psychometrics and occasionally uses technical jargon that can be difficult to penetrate. This review evaluates existing measures of gastrointestinal cancer symptoms, provides tool descriptions, and uses predefined, objective quality criteria to rate psychometric quality and facilitate tool choices for researchers and clinicians. METHODS: MEDLINE, EMBASE, CINAHL, and PsycINFO databases were systematically reviewed for scales assessing gastrointestinal cancer and gastrointestinal cancer site-specific symptoms. Evaluation criteria were the following: breadth of domain coverage (content validity), high internal consistency (α ≥ .80), sensitivity to change, and extent of validation. RESULTS: In n = 36 validation studies, 26 gastrointestinal cancer symptom measures were identified. Of these, n = 13 tools met criteria for recommendation, and six in particular showed strong psychometric properties. The Functional Assessment of Cancer Therapy-Colorectal (FACT-C), European Organization for Research and Treatment of Cancer (EORTC) gastric cancer module (QLQ-STO22), FACT-Hepatobiliary (FACT-Hep), and EORTC oesophagus, oesophago-gastric junction and stomach module (QLQ OG-25) were identified as the most comprehensive and best validated scales for each of the major gastrointestinal cancer sites. The FACT-Colorectal Symptom Index (FCSI-9) and the National Comprehensive Cancer Network (NCCN) FACT-Hepatobiliary Symptom Index (FHSI-18) were specifically validated in patients with advanced colorectal and liver cancer and also demonstrated superior psychometric properties. CONCLUSIONS: Several comprehensive, well-validated scales exist to adequately assess gastrointestinal cancer site-specific symptoms. Specifically, gastrointestinal cancer submodules of the FACT quality of life questionnaire represent adequate tool choices in most instances and overall, were better validated than the respective EORTC tools. Further improvement of existing, highly rated measures is recommended.

Screening for emotional distress in cancer patients: a systematic review of assessment instruments.

Screening for emotional distress is becoming increasingly common in cancer care. This systematic review examines the psychometric properties of the existing tools used to screen patients for emotional distress, with the goal of encouraging screening programs to use standardized tools that have strong psychometrics. Systematic searches of MEDLINE and PsycINFO databases for English-language studies in cancer patients were performed using a uniform set of key words (eg, depression, anxiety, screening, validation, and scale), and the retrieved studies were independently evaluated by two reviewers. Evaluation criteria included the number of validation studies, the number of participants, generalizability, reliability, the quality of the criterion measure, sensitivity, and specificity. The literature search yielded 106 validation studies that described a total of 33 screening measures. Many generic and cancer-specific scales satisfied a fairly high threshold of quality in terms of their psychometric properties and generalizability. Among the ultrashort measures (ie, those containing one to four items), the Combined Depression Questions performed best in patients receiving palliative care. Among the short measures (ie, those containing five to 20 items), the Center for Epidemiologic Studies-Depression Scale and the Hospital Anxiety and Depression Scale demonstrated adequate psychometric properties. Among the long measures (ie, those containing 21-50 items), the Beck Depression Inventory and the General Health Questionaire-28 met all evaluation criteria. The PsychoSocial Screen for Cancer, the Questionnaire on Stress in Cancer Patients-Revised, and the Rotterdam Symptom Checklist are long measures that can also be recommended for routine screening. In addition, other measures may be considered for specific indications or disease types. Some measures, particularly newly developed cancer-specific scales, require further validation against structured clinical interviews (the criterion standard for validation measures) before they can be recommended.