Evidence map›Paper›PMID 26895073›Full record

ArticlePloS one2016

The Drug Derived Complexity Index (DDCI) Predicts Mortality, Unplanned Hospitalization and Hospital Readmissions at the Population Level.

Fabio Robusto, Vito Lepore, Antonio D'Ettorre, Giuseppe Lucisano, Giorgia De Berardis, Lucia Bisceglia, Gianni Tognoni, Antonio Nicolucci

Abstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  3. Pilot study on the use of a multimorbidity index in patients receiving home parenteral nutrition.Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Fabio RobustoDepartment of Clinical Pharmacology and Epidemiology, Mario Negri Sud Foundation, Santa Maria Imbaro (CH), Italy.
Vito LeporeDepartment of Clinical Pharmacology and Epidemiology, Mario Negri Sud Foundation, Santa Maria Imbaro (CH), Italy.
Antonio D'EttorreDepartment of Clinical Pharmacology and Epidemiology, Mario Negri Sud Foundation, Santa Maria Imbaro (CH), Italy.
Giuseppe LucisanoCenter for Outcomes Research and clinical Epidemiology, Pescara (PE), Italy.
Giorgia De BerardisCenter for Outcomes Research and clinical Epidemiology, Pescara (PE), Italy.
Lucia BiscegliaRegional Health Agency of Puglia, Bari (BA), Italy.
Gianni TognoniIRRCS Mario Negri Milano, Milano (MI), Italy.
Antonio NicolucciCenter for Outcomes Research and clinical Epidemiology, Pescara (PE), Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveto develop and validate the Drug Derived Complexity Index (DDCI), a predictive model derived from drug prescriptions able to stratify the general population according to the risk of death, unplanned hospital admission, and readmission, and to compare the new predictive index with the Charlson Comorbidity Index (CCI).

designPopulation-based cohort study, using a record-linkage analysis of prescription databases, hospital discharge records, and the civil registry. The predictive model was developed based on prescription patterns indicative of chronic diseases, using a random sample of 50% of the population. Multivariate Cox proportional hazards regression was used to assess weights of different prescription patterns and drug classes. The predictive properties of the DDCI were confirmed in the validation cohort, represented by the other half of the population. The performance of DDCI was compared to the CCI in terms of calibration, discrimination and reclassification.

setting6 local health authorities with 2.0 million citizens aged 40 years or above.

resultsOne year and overall mortality rates, unplanned hospitalization rates and hospital readmission rates progressively increased with increasing DDCI score. In the overall population, the model including age, gender and DDCI showed a high performance. DDCI predicted 1-year mortality, overall mortality and unplanned hospitalization with an accuracy of 0.851, 0.835, and 0.584, respectively. If compared to CCI, DDCI showed discrimination and reclassification properties very similar to the CCI, and improved prediction when used in combination with the CCI. CONCLUSIONS AND RELEVANCE: DDCI is a reliable prognostic index, able to stratify the entire population into homogeneous risk groups. DDCI can represent an useful tool for risk-adjustment, policy planning, and the identification of patients needing a focused approach in everyday practice.

Indexed as

Drug PrescriptionsHospitalizationModels, StatisticalPatient ReadmissionPopulation SurveillanceAdultAgedCohort StudiesComorbidityDatabases, FactualFemaleHumansIncidenceItalyKaplan-Meier EstimateMale

Identifiers

PMID26895073
PMCPMC4760682

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.