Caren van Roekel

114 Chapter 3 TABLE S2. Internal consistency of the multi-item scales at baseline, 6 weeks and 3 months Scale No. items α* baseline α* 6 weeks α* 3 months EORTC QLQ-C30 Global health status/QoL 2 0.90 0.95 0.97 Physical functioning 5 0.88 0.88 0.89 Role functioning 2 0.87 0.95 0.95 Emotional functioning 4 0.86 0.85 0.88 Cognitive functioning 2 0.65 0.64 0.81 Social functioning 2 0.79 0.86 0.89 Fatigue 3 0.87 0.86 0.93 Nausea and vomiting 2 0.58 0.52 0.79 Pain 2 0.77 0.86 0.78 Dyspnea 1 N.A. N.A. N.A. Insomnia 1 N.A. N.A. N.A. Appetite 1 N.A. N.A. N.A. Constipation 1 N.A. N.A. N.A. Diarrhea 1 N.A. N.A. N.A. Financial difficulties 1 N.A. N.A. N.A. EORTC QLQ-LMC21 Emotional problems 4 0.87 0.69 0.82 Nutritional problems 2 0.79 0.74 0.89 Fatigue 3 0.91 0.90 0.91 Pain 3 0.74 0.75 0.74 Problems with taste 1 N.A. N.A. N.A. Dry mouth 1 N.A. N.A. N.A. Sore mouth/tongue 1 N.A. N.A. N.A. Peripheral neurophathy 1 N.A. N.A. N.A. Jaundice 1 N.A. N.A. N.A. Contact with friends 1 N.A. N.A. N.A. Talking about feelings 1 N.A. N.A. N.A. Sex life 1 N.A. N.A. N.A. * Cronbach’s alpha. N.A.: not applicable since Cronbach’s alpha can only be determined for scales with multiple items.