The effectiveness of the Screening Inventory of Psychosocial Problems (SIPP) in cancer patients treated with radiotherapy: design of a cluster randomised controlled trial

Table 1 Primary and secondary outcome measures of the effect evaluation

Variables	No. of items	T1	T2	T3	T4
Primary outcome measures:
Number and types of referrals	8/NA	-	-	Q	Q/DR
Secondary outcome measures:
Patients' satisfaction with the radiotherapist-patient communication	5	-	Q	-	-
Extent of psychological symptoms:
Symptoms of anxiety and depression (HADS)	14	Q	-	Q	Q
General psychological distress (GHQ-12)	12	Q	-	Q	Q
Quality of life (EORTC QLQ-C30)	30	Q	-	Q	Q
Additional variables:
Socio-demographic variables	4	-	Q	-	-
Medical variables	4	-	-	-	DR

T1: Before first consultation (baseline, only groups with pre-measurement); T2: After consultation;
T3: Three months after baseline; T4: 12 months after baseline; N/A: not applicable; Q: questionnaire:
DR: data record.
HADS: Hospital Anxiety and Depression Scale [16]; GHQ-12: General Health Questionnaire-12 items [17];
EORTC QLQ-C30: European Organisation for Research and Treatment of Cancer,
Quality of life Questionnaire 30 items [46].

ISSN: 1471-2407