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Predictive factors of urinary tract infections among the oldest old in the general population. A population-based prospective follow-up study.

Caljouw MA, den Elzen WP, Cools HJ, Gussekloo J - BMC Med (2011)

Bottom Line: Multivariate analysis showed that history of UTI between the age of 85 and 86 years (hazard ratio (HR) 3.4 (95% CI 2.4, 5.0)), impaired cognitive function (HR 1.9 (95% CI 1.3, 2.9)), disability in daily living (HR 1.7 (95% CI 1.1, 2.5)) and urine incontinence (HR 1.5 (95% CI 1.0, 2.1)) were independent predictors of an increased incidence of UTI from age 86 onwards.Within the oldest old, a history of UTI between the age of 85 and 86 years, cognitive impairment, ADL disability and urine incontinence are independent predictors of developing UTI.These predictive factors could be used to target preventive measures to the oldest old at high risk of UTI.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Public Health and Primary Care, Leiden University Medical Center, Netherlands. m.a.a.caljouw@lumc.nl

ABSTRACT

Background: Urinary tract infections (UTI) are common among the oldest old and may lead to a few days of illness, delirium or even to death. We studied the incidence and predictive factors of UTI among the oldest old in the general population.

Methods: The Leiden 85-plus Study is a population-based prospective follow-up study of 86-year-old subjects in Leiden, The Netherlands. Information on the diagnosis of UTI was obtained annually during four years of follow-up from the medical records and interviews of treating physicians. A total of 157 men and 322 women aged 86 years participated in the study. Possible predictive factors were collected at baseline, including history of UTI between the age of 85 and 86 years, aspects of functioning (cognitive impairment (Mini-Mental State Examination (MMSE) < 19), presence of depressive symptoms (Geriatric Depression Scale (GDS) > 4), disability in activities of daily living (ADL)), and co-morbidities.

Results: The incidence of UTI from age 86 through 90 years was 11.2 (95% confidence interval (CI) 9.4, 13.1) per 100 person-years at risk. Multivariate analysis showed that history of UTI between the age of 85 and 86 years (hazard ratio (HR) 3.4 (95% CI 2.4, 5.0)), impaired cognitive function (HR 1.9 (95% CI 1.3, 2.9)), disability in daily living (HR 1.7 (95% CI 1.1, 2.5)) and urine incontinence (HR 1.5 (95% CI 1.0, 2.1)) were independent predictors of an increased incidence of UTI from age 86 onwards.

Conclusions: Within the oldest old, a history of UTI between the age of 85 and 86 years, cognitive impairment, ADL disability and urine incontinence are independent predictors of developing UTI. These predictive factors could be used to target preventive measures to the oldest old at high risk of UTI.

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Cumulative incidence of UTI from age 86 onwards depending on history of UTI between the age of 85 and 86 years. Black line: participants with episode of UTI between the ages of 85 and 86 years (n = 72). Dotted line: participants without episode of UTI between the ages of 85 and 86 years (n = 407).
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Figure 1: Cumulative incidence of UTI from age 86 onwards depending on history of UTI between the age of 85 and 86 years. Black line: participants with episode of UTI between the ages of 85 and 86 years (n = 72). Dotted line: participants without episode of UTI between the ages of 85 and 86 years (n = 407).

Mentions: Participants with UTI between the ages of 85 and 86 years had an increased risk of developing UTI during follow-up compared to participants without an episode of UTI between the ages of 85 and 86 years (Figure 1 and Table 1; HR 4.1 (95% CI 2.9, 5.9)). The risk of a recurrent UTI was greatest within the first year of follow-up (HR: 6.8 (95% CI 4.1, 11.1), HR second to fourth year: 1.8 (95% CI 0.9, 3.6)).


Predictive factors of urinary tract infections among the oldest old in the general population. A population-based prospective follow-up study.

Caljouw MA, den Elzen WP, Cools HJ, Gussekloo J - BMC Med (2011)

Cumulative incidence of UTI from age 86 onwards depending on history of UTI between the age of 85 and 86 years. Black line: participants with episode of UTI between the ages of 85 and 86 years (n = 72). Dotted line: participants without episode of UTI between the ages of 85 and 86 years (n = 407).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3117726&req=5

Figure 1: Cumulative incidence of UTI from age 86 onwards depending on history of UTI between the age of 85 and 86 years. Black line: participants with episode of UTI between the ages of 85 and 86 years (n = 72). Dotted line: participants without episode of UTI between the ages of 85 and 86 years (n = 407).
Mentions: Participants with UTI between the ages of 85 and 86 years had an increased risk of developing UTI during follow-up compared to participants without an episode of UTI between the ages of 85 and 86 years (Figure 1 and Table 1; HR 4.1 (95% CI 2.9, 5.9)). The risk of a recurrent UTI was greatest within the first year of follow-up (HR: 6.8 (95% CI 4.1, 11.1), HR second to fourth year: 1.8 (95% CI 0.9, 3.6)).

Bottom Line: Multivariate analysis showed that history of UTI between the age of 85 and 86 years (hazard ratio (HR) 3.4 (95% CI 2.4, 5.0)), impaired cognitive function (HR 1.9 (95% CI 1.3, 2.9)), disability in daily living (HR 1.7 (95% CI 1.1, 2.5)) and urine incontinence (HR 1.5 (95% CI 1.0, 2.1)) were independent predictors of an increased incidence of UTI from age 86 onwards.Within the oldest old, a history of UTI between the age of 85 and 86 years, cognitive impairment, ADL disability and urine incontinence are independent predictors of developing UTI.These predictive factors could be used to target preventive measures to the oldest old at high risk of UTI.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Public Health and Primary Care, Leiden University Medical Center, Netherlands. m.a.a.caljouw@lumc.nl

ABSTRACT

Background: Urinary tract infections (UTI) are common among the oldest old and may lead to a few days of illness, delirium or even to death. We studied the incidence and predictive factors of UTI among the oldest old in the general population.

Methods: The Leiden 85-plus Study is a population-based prospective follow-up study of 86-year-old subjects in Leiden, The Netherlands. Information on the diagnosis of UTI was obtained annually during four years of follow-up from the medical records and interviews of treating physicians. A total of 157 men and 322 women aged 86 years participated in the study. Possible predictive factors were collected at baseline, including history of UTI between the age of 85 and 86 years, aspects of functioning (cognitive impairment (Mini-Mental State Examination (MMSE) < 19), presence of depressive symptoms (Geriatric Depression Scale (GDS) > 4), disability in activities of daily living (ADL)), and co-morbidities.

Results: The incidence of UTI from age 86 through 90 years was 11.2 (95% confidence interval (CI) 9.4, 13.1) per 100 person-years at risk. Multivariate analysis showed that history of UTI between the age of 85 and 86 years (hazard ratio (HR) 3.4 (95% CI 2.4, 5.0)), impaired cognitive function (HR 1.9 (95% CI 1.3, 2.9)), disability in daily living (HR 1.7 (95% CI 1.1, 2.5)) and urine incontinence (HR 1.5 (95% CI 1.0, 2.1)) were independent predictors of an increased incidence of UTI from age 86 onwards.

Conclusions: Within the oldest old, a history of UTI between the age of 85 and 86 years, cognitive impairment, ADL disability and urine incontinence are independent predictors of developing UTI. These predictive factors could be used to target preventive measures to the oldest old at high risk of UTI.

Show MeSH
Related in: MedlinePlus