A feasibility study of distress screening with psychometric evaluation and referral of cancer patients

Abstract

Abstract To assess for associations of known psychometric scales GAD-7, PHQ-9, pc-PTSD-5 with demographics and clinical characteristics of cancer patients as well as identify their value in screening for distress and in guiding Psycho-Oncology evaluation. This prospective feasibility study employed three psychological testing questionnaires, specifically the GAD-7, PHQ-9, and PC-PTSD-5, for the purpose of distress screening. Patients with a diagnosis of colorectal cancer who scored highly on at least one psychometric scale (defined in previous studies of non-cancer populations as a GAD-7 score of 10 or above, a PHQ-9 score of 10 or above, or a PC-PTSD-5 score of 4 or above) were offered a referral for further assessment in the Psycho-Oncology service and triaged via a semi-structured interview. The relationship between patients’ demographics and clinical characteristics and scores and outcomes was evaluated using the chi-square test. Fifty-four patients (30 females) of median age 60 years (range 36–81) were evaluated in the study. Thirty-four patients (63%) scored high on GAD-7, 40 (74%) on PHQ-9, and 8 (15%) on PC-PTSD-5 scales, respectively. Twenty-nine out of the 54 patients who underwent initial assessment with the psychometric scales (53.7%) accepted to be referred to the Psycho-Oncology service and were triaged via semi-structured interview while the rest 25/54 (46.3%) patients declined further assessment. Twenty-two of the patients who were interviewed (76%) required further specialist Psycho-Oncology intervention and the rest were signposted to community services. Patients younger than 65 years of age were more likely to score high according to the GAD-7 tool (p = 0.036). White Caucasian patients tended to score higher in the PHQ-9 questionnaire compared to non-white ones (p = 0.07). Prior history of mental disorder was significantly associated with higher scores in both GAD-7 (p = 0.041) and PC-PTSD-5 tools (p = 0.016). Patients who accepted a referral for psycho-oncology intervention demonstrated statistically elevated levels of anxiety on GAD-7 (p = 0.007) and diminished levels of depression on PHQ-9 (p = 0.042) compared to those who declined the referral. A clinical pathway involving a stepwise approach of psychometric scale evaluation and semi-structured interview can appropriately identify cancer patients with distress requiring further psychological support.