Fig. 2From: Measurement properties of the 12-item Short Form Health Survey version 2 in Australians with lung cancer: a Rasch analysisPerson-item threshold distribution depicting targeting for a PCS-12 and b MCS-12. Distributions of the locations of people (upper panel) and items (lower panel) on the common logit metric (negative values = poor health; positive values = better health)Back to article page