Table 2 Prevalence of CIND and dementia by socio-demographic characteristics and comorbidity
From: Prevalence and pattern of cognitive impairment in rural and urban populations from Northern Portugal
| Â | CIND | Dementia | |||||
|---|---|---|---|---|---|---|---|
Characteristics | N | No cases | Prev (%) | 95% CI | No cases | Prev (%) | 95% CI |
All | 1146 | 141 | 12.3 | 10.4-14.4 | 31 | 2.7 | 1.9-3.8 |
   Residence | |||||||
Rural | 713 | 96 | 13.5 | 11.1-16.2 | 24 | 3.4 | 2.3-5.0 |
Urban | 433 | 45 | 10.4 | 7.9-13.6 | 7 | 1.6 | 0.8-3.3 |
   Age (years) | |||||||
55-59 | 228 | 22 | 9.6 | 6.5-14.2 | 1 | 0.4 | 0.1-2.4 |
60-64 | 258 | 21 | 8.1 | 5.4-12.1 | 4 | 1.6 | 0.6-3.9 |
65-69 | 258 | 28 | 10.9 | 7.6-15.2 | 4 | 1.6 | 0.6-3.9 |
70-74 | 237 | 37 | 15.6 | 11.5-20.8 | 10 | 4.2 | 2.3-7.6 |
75-79 | 165 | 33 | 20.0 | 14.6-26.8 | 12 | 7.3 | 4.2-12.3 |
   Gender | |||||||
Men | 462 | 44 | 9.5 | 7.2-12.5 | 15 | 3.2 | 2.0-5.3 |
Women | 684 | 97 | 14.2 | 11.8-17.0 | 16 | 2.3 | 1.5-3.8 |
   Education (years) | |||||||
Illiterate | 220 | 45 | 20.5 | 15.6-26.3 | 9 | 4.1 | 2.2-7.6 |
1-3 | 329 | 47 | 14.3 | 10.9-18.5 | 13 | 4.0 | 2.3-6.6 |
4 | 479 | 41 | 8.5 | 6.3-11.4 | 7 | 1.5 | 0.7-3.0 |
5 or more | 118 | 8 | 6.8 | 3.5-12.8 | 2 | 1.7 | 0.5-6.0 |
   Residential status | |||||||
Living alone | 99 | 20 | 20.2 | 13.5-29.2 | 1 | 1.0 | 0.2-5.5 |
Living with the family | 1040 | 119 | 11.4 | 9.7-13.5 | 30 | 2.9 | 2.0-4.1 |
Institutional residence | 7 | 2 | 28.6 | 8.2-64.1 | 0 | 0.0 | 0.0-35.4 |
   Occupation (present/late) | |||||||
Farming | 421 | 64 | 15.2 | 12.1-18.9 | 18 | 4.3 | 2.7-6.7 |
Production | 239 | 27 | 11.3 | 7.9-15.9 | 5 | 2.1 | 0.9-4.8 |
Personal care & serving | 189 | 24 | 12.7 | 8.7-18.2 | 3 | 1.6 | 0.5-4.6 |
Sales/White collar | 162 | 9 | 5.6 | 3.0-10.2 | 2 | 1.2 | 0.3-4.4 |
Housewife (not rewarded) | 135 | 17 | 12.6 | 8.0-19.2 | 3 | 2.2 | 0.8-6.3 |
   Retired worker | |||||||
Yes | 781 | 110 | 14.1 | 11.8-16.7 | 27 | 3.5 | 2.4-5.0 |
No | 365 | 31 | 8.5 | 6.1-11.8 | 4 | 1.1 | 0.4-2.8 |
   Depending on others | |||||||
Yes | 71 | 20 | 28.2 | 19.0-39.5 | 10 | 14.1 | 7.8-24.0 |
No | 1075 | 121 | 11.3 | 9.5-13.3 | 21 | 2.0 | 1.3-3.0 |
   Physical/Mental comorbidity | |||||||
   Depression | |||||||
Yes | 130 | 34 | 26.2 | 19.4-34.3 | 4 | 3.1 | 1.2-7.7 |
No | 1016 | 107 | 10.5 | 8.8-12.6 | 27 | 2.7 | 1.8-3.8 |
   Cerebrovascular disease | |||||||
Yes | 89 | 22 | 24.7 | 16.9-34.6 | 15 | 16.9 | 10.5-26.0 |
No | 1057 | 119 | 11.3 | 9.5-13.3 | 16 | 1.5 | 0.9-2.4 |
   Other disease†| |||||||
Yes | 183 | 55 | 30.1 | 23.9-37.1 | 13 | 7.1 | 4.2-11.8 |
No | 963 | 86 | 8.9 | 7.3-10.9 | 18 | 1.9 | 1.2-2.9 |
   No vascular risk factors‡ | |||||||
0 | 620 | 57 | 9.2 | 7.2-11.7 | 12 | 1.9 | 1.1-3.4 |
1 | 363 | 57 | 15.7 | 12.3-19.8 | 14 | 3.9 | 2.3-6.4 |
2 or more | 163 | 27 | 16.6 | 11.6-23.0 | 5 | 3.1 | 1.3-7.0 |