Agreement between a self-administered questionnaire on musculoskeletal disorders of the neck-shoulder region and a physical examination

Table 4 Agreement between the three physical examination definitions and the primary questionnaire definition (n = 187)

Physical Examination definitions	Global agreement			Agreement among cases⁽¹⁾	Agreement among non-cases⁽²⁾	Sn	Sp
	Kappa	95% CI	%	%	%	%	%
1. Primary Definition	0.44	0.31–0.56	72	79	66	66	79
2. Definition based on decreased range of motion or muscular strength	0.30	0.17–0.44	66	55	75	64	67
3. Definition based solely on pain	0.48	0.35–0.60	74	65	82	75	74

Abbreviations: Sn = sensitivity; Sp = specificity
⁽¹⁾ Cases based on questionnaire definition. Agreement among cases corresponds to the positive predictive value.
⁽²⁾ Non-cases based on questionnaire definition. Agreement among non-cases corresponds to the negative predictive value.

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