Validation of the Sour Seven Questionnaire for screening delirium in hospitalized seniors by informal caregivers and untrained nurses

Table 2 Relative risks, c-statistics and weighted scores of Sour Seven Questions to predict delirium in comparison with geriatric psychiatrist’s assessment

Question #	Relative risk (95 % CI)	c-statistic	Weighted score
1 (Altered level of awareness)	3.43 (1.79–6.58)	0.79	3
2 (Reduced attentiveness)	3.87 (1.90–7.89)	0.62	4
3 (Fluctuation)	3.43 (1.79–6.58)	0.79	3
4 (Disordered thinking)	2.61 (1.52–4.49)	0.71	3
5 (Disorganized behaviour)	2.42 (1.44–4.09)	0.69	2
6 (Impaired eating/drinking)	1.82 (1.82–1.82)	0.63	2
7 (Difficulty in mobility)	1.27 (0.57–2.84)	0.53	1
Total			18

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