OBJECTIVES: To adapt and validate a Spanish-language version (SV) of the National Institutes of Health Stroke Scale (NIHSS) to facilitate its use in Spanish-speaking contexts. PATIENTS AND METHODS: The methods recommended by the International Quality of Life Assessment Project were followed. Two forward translations and 1 back translation of the NIHSS were developed to ensure lingual and cultural equivalence. A final revised SV-NIHSS was administered by 8 physicians to patients with stroke in 3 clinics in Buenos Aires, Argentina, from September 2003 to December 2003. RESULTS: The study included 102 patients (mean +/- SD age, 73.3+/-6.5 years; 56% women) with stroke (86% ischemic). The SV-NIHSS mean baseline score was 9.78+/-7.04. Interrater reliability was Independently evaluated for 98 patients, showing a high agreement: kappa, 0.77 to 0.99 for the 15 items; interrater correlation coefficient, 0.991 (95% confidence Interval, 0.987-0.994). Intrarater reliability was excellent: kappa, 0.86 to 1.00 for the 15 items; mean intrarater correlation coefficient, 0.994 (95% confidence interval, 0.991-0.996). Construct validity was also adequate; the SV-NIHSS had a negative correlation with baseline Glasgow Coma Scale (Spearman coefficient = -0.574, P < .001) and with Barthel index at 3 months (Spearman coefficient = -0.658, P < .001). Patients with different Rankin scores at 3 months also had significantly different baseline SV-NIHSS scores, from a mean of 4.29+/-2.21 for Rankin score of 0 to a mean of 29.40+/-3.97 for Rankin score of 6 (P < .001). CONCLUSION: This study shows that a Spanish-language version of the NIHSS developed with internationally recommended methods is reliable and valid when applied in a Spanish-speaking setting.
OBJECTIVES: To adapt and validate a Spanish-language version (SV) of the National Institutes of Health Stroke Scale (NIHSS) to facilitate its use in Spanish-speaking contexts. PATIENTS AND METHODS: The methods recommended by the International Quality of Life Assessment Project were followed. Two forward translations and 1 back translation of the NIHSS were developed to ensure lingual and cultural equivalence. A final revised SV-NIHSS was administered by 8 physicians to patients with stroke in 3 clinics in Buenos Aires, Argentina, from September 2003 to December 2003. RESULTS: The study included 102 patients (mean +/- SD age, 73.3+/-6.5 years; 56% women) with stroke (86% ischemic). The SV-NIHSS mean baseline score was 9.78+/-7.04. Interrater reliability was Independently evaluated for 98 patients, showing a high agreement: kappa, 0.77 to 0.99 for the 15 items; interrater correlation coefficient, 0.991 (95% confidence Interval, 0.987-0.994). Intrarater reliability was excellent: kappa, 0.86 to 1.00 for the 15 items; mean intrarater correlation coefficient, 0.994 (95% confidence interval, 0.991-0.996). Construct validity was also adequate; the SV-NIHSS had a negative correlation with baseline Glasgow Coma Scale (Spearman coefficient = -0.574, P < .001) and with Barthel index at 3 months (Spearman coefficient = -0.658, P < .001). Patients with different Rankin scores at 3 months also had significantly different baseline SV-NIHSS scores, from a mean of 4.29+/-2.21 for Rankin score of 0 to a mean of 29.40+/-3.97 for Rankin score of 6 (P < .001). CONCLUSION: This study shows that a Spanish-language version of the NIHSS developed with internationally recommended methods is reliable and valid when applied in a Spanish-speaking setting.
Authors: B A Pons-Estel; J Sánchez-Guerrero; J Romero-Díaz; A Iglesias-Gamarra; E Bonfa; E F Borba; S K Shinjo; S Bernatsky; A Clarke; M A García; J C Marcos; A Duarte; G A Berbotto; H Scherbarth; C D Marques; L Onetti; V Saurit; A W S Souza; E Velozo; L J Catoggio; O Neira; P I Burgos; L A Ramirez; J F Molina; I G De La Torre; R Silvariño; J A Manni; S Durán-Barragán; L M Vilá; P R Fortin; J Calvo-Alén; M J Santos; M Portela; M H Esteva-Spinetti; M Weisman; E M Acevedo; M I Segami; S B Gentiletti; J Roldán; I Navarro; E Gonzalez; J M Liu; E W Karlson; K H Costenbader; F Wolfe; G S Alarcón Journal: Lupus Date: 2009-10 Impact factor: 2.911
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