Screening of physical distress in breast cancer survivors: Concurrent validity of the Distress Thermometer and Problem List.

Several studies support the validity and psychometric properties of the DT&PL for measuring psychosocial distress in breast cancer survivors (BCSs). However, next to psychosocial problems, it is equally important to identify distress caused by limitations in physical functioning. Validity of the DT&PL for the identification of physical problems in BCSs has not yet been investigated. Therefore, the purpose of the present study is to investigate the concurrent validity and psychometric properties of the Dutch DT&PL in BCSs for the identification of physical problems. Ninenty BCSs completed the DT&PL, ShortForm-36 (SF-36) and the Dutch Disability of the Arm, Shoulder and Hand questionnaire (DASH). Forty-seven % of BCSs reported a high level of distress on the DT&PL (score ≥5). Distressed BCS showed increased physical and emotional problems and problems at the upper limb region. The scores obtained with the DT&PL correlated weakly to strongly with subscales for physical functioning of the SF-36 (r = -0.224 to r = -0.676; p < 0.05) and with limitations in physical functioning at the upper limb region (DASH; r = 0.380 to r = 0.619; p < 0.01). In conclusion, the Dutch DT&PL is a multidimensional instrument showing good concurrent validity for the screening of physical problems.

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