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Table 2 Crude, age-adjusted, and age- and sex-adjusted prevalence of dementia and cognitive impairment (CI).

From: Prevalence of cognitive impairment in individuals aged over 65 in an urban area: DERIVA study

  Crude Age-adjusteda Age, sex ajusteda No. individualsb
  PP PE 95 CI PP 95 CI PP 95 CI Count 95 CI
CI (Dementia+ CIND)       
Male 14/116 12,1 6,1 18,0 10,7 4,6-16,9     
Female 48/211 22,7 17,1-28,4 19,1 12,9-25,2     
Both 62/327 19,0 14,7-23,2 16,1 11,6-20,6 14,9 10,6-19,2 51 36-65
Age-group          
65-69 9/69 13,0 5,1-21,0       
70-74 8/72 11,1 3,9-18,4       
75-79 9/75 12,0 4,6-19,4       
80-84 15/63 23,8 13,3-34,3       
≥ 85 21/48 43,8 29,7-57,8       
CIND          
Male 10/116 8,6 3,5 - 13,7 8,1 2,5-13,6     
Female 38/211 18,0 12,8 - 23,2 15,1 9,6-20,6     
Both 48/327 14,7 10,8 - 18,5 11,4 7,5-15,4 11,6 7,7-15,5 39 26-53
Age-group          
65-69 8/69 11,6 4,0-19,1       
70-74 7/72 9,7 2,9-16,6       
75-79 3/75 4,0 0,0-8,4       
80-84 12/63 19,0 9,4-28,7       
≥ 85 11/48 22,9 11,0-34,8       
Dementia          
Male 4/116 3,4 0,1 - 6,8 2,7 0,0 - 5,3     
Female 10/211 4,7 1,9 - 7,6 4,0 1,3 - 6,8     
Both 14/327 4,3 2,1 - 6,5 3,4 1,5 - 5,3 3,3 1,4 - 5,2 11 5-18
Age-group          
65-69 1/69 1,4 0,0 - 4,3       
70-74 1/72 1,4 0,0 - 4,1       
75-79 6/75 8,0 1,9 - 14,1       
80-84 3/63 4,8 0,0 - 10,0       
≥ 85 3/48 6,3 0,0 - 13,1       
  1. aAge standardization weights European Standard: 36.4, 27.3, 18.2, 9.1 and 9.1 for 65-69, 70-74, 75-79, 80-84 and ≥85, respectively; sex standardization weight: 0.50 (sources: http://www.wmpho.org.uk/localprofiles/metadata.aspx?id=META_EUROSTD) [26];
  2. bEstimated number of subjects in hundreds with de disease based on age- and sex-adjusted prevalence (Salamanca h ≥65 years 2009 estimated population: 34.020h. (source: Castilla and León Regional Health Service lists. CIND: cognitive impairment not dementia; CI, confidence interval; PE, prevalence point-estimate; PP, crude prevalence ratio (cases divided by population).