Patient Priority Care for Older Adults With Multiple Chronic Conditions: Complete Statistical Analysis

1. Trial at a Glance

This page covers the registry results for Patient Priority Care for Older Adults With Multiple Chronic Conditions (NCT04510948), a non-randomized na study. The primary outcome is Treatment Burden.

2. Clinical Question

The project description frames the question around whether care aligned with patients’ health priorities can reduce treatment burden and unwanted or unnecessary health care, and around patients’ assessment of the program’s value. The registered primary outcome is narrower: change in the Treatment Burden Questionnaire score. The record describes the score range and direction but does not report the observed changes or the comparison between groups.

The comparison is nonrandomized and involves two matched primary care sites. Consequently, the central statistical question is not only whether the outcome differed between groups, but also how much confidence to place in that contrast given the way participants and sites were assigned. Matching sites does not establish that the people receiving each care approach were otherwise comparable. The registry record does not report enough outcome-analysis detail to determine how the primary comparison was estimated or how uncertainty around it was quantified.

3. Trial Design

This is a completed, parallel-group, nonrandomized study of Patient Priorities Care and usual care. The registry record describes two matched primary care sites and records enrollment of 264. Allocation is listed as nonrandomized. The study is not listed as having a clinical-trial phase; its phase is recorded as NA. Masking is listed as single, but which people or groups were masked is not reported in the registry record.

The intervention is described as eliciting and documenting patients’ health outcome goals and care preferences and aligning clinical care with them. The description of the intervention arm also mentions contact by a trained priorit…; the remainder of that wording is not reported in the registry record. The comparator is routine clinical care. This description identifies the broad contrast but does not specify the details of care delivered in either arm beyond those statements.

The registered primary outcome is Treatment Burden, measured as change in score from baseline to follow-up at 8-9 months. The registry also lists Shared Decision Making and Goal Ascertainment as a secondary outcome. It records four outcome measures, but the available record does not provide enough detail to characterize all of them. No analysis is listed in the registry’s analysis count.

The study start date is 2020-08-14, the primary completion date is 2022-01-15, and the status is completed. These dates describe the registered study timeline, not the timing or completeness of outcome reporting. The registry record does not report the method used to match the two sites, how participants came to receive either care approach, or whether recruitment and follow-up procedures were the same across sites. Because allocation was nonrandomized, the groups should not automatically be interpreted as equivalent apart from the intervention.

Although the registry describes a comparison of two care approaches, it does not provide the primary outcome estimates, their confidence intervals, or a reported statistical test. The design information therefore supports an account of the intended comparison, but not a conclusion about the magnitude or precision of any outcome difference.

4. Participant Flow and Accounting

The registry reports how participants moved through each stage of the study. All counts below are exactly as posted; missing counts are not inferred from other stages.

Overall Study

Analysis population for the primary outcome, as defined in the registry: The baseline outcome is included to illustrate weighted balance of covariate before PPC is introduced, and the P values for the baseline outcome comparison are based on weighted and imputed data (same as the adjusted P values in Table 1).Of note, the baseline value of the outcome was included in outcome models at follow-up. Therefore, the difference between estimates for baseline and follow-up is not necessarily equal to the effect size reported.

5. Baseline Characteristics

The table reproduces the baseline characteristics posted in the registry, which describe the participants analysed at baseline and help show whether the randomized groups were comparable.

Population: The number above includes respondents with some missing data. Although not all respondents answered all questions, all participants who responded completely at least one scale are included here. Raw numbers are reported.

6. Primary Endpoint

The registry lists the primary outcome as Treatment Burden, measured over from baseline to follow-up at 8-9 months.

The primary endpoint is Treatment Burden, defined as change in a patient’s score on the Treatment Burden Questionnaire from baseline to follow-up at 8-9 months. The questionnaire score ranges from 0-150, and the registry states that a lower score reflects less perceived treatment burden. The score is described as a mean continuous measure, with a 95% confidence interval as the dispersion measure.

The endpoint is relevant to the stated aim because the project concerns the burden of health care for older adults with multiple chronic conditions. Patient Priorities Care is intended to align care with the health outcomes patients most want and the care they are willing and able to receive. A treatment-burden score can describe patients’ perceptions of the demands associated with care. It does not, by itself, establish whether care was wanted, whether decisions were shared, or whether health outcomes improved; those are related but distinct questions.

The registry reports Cronbach’s alpha=0.90 for the questionnaire. General statistical context: a reliability coefficient describes consistency among items under the measure’s intended use; it does not show that an intervention changed the score, prove that the measure captures every aspect of treatment burden, or establish that a between-group difference is meaningful to patients.

The primary endpoint’s definition and follow-up window are reported, but observed baseline and follow-up values, the estimated change in each group, and the between-group contrast are not reported in the registry record. The effect’s precision and direction therefore cannot be assessed from the registered endpoint description alone.

7. Why No Re-analysis Is Shown

8. Statistical Interpretation

9. Statistical Methods Explained

What kind of comparison is this? The registry describes a parallel-group, nonrandomized comparison involving two matched primary care sites. General statistical context: a parallel design compares groups observed over the same study period, while nonrandomized allocation means treatment assignment was not determined by chance as part of the stated design. Differences between groups may therefore reflect the care approach and other factors. Matching can make groups more comparable on the features used for matching, but it does not guarantee balance on other measured or unmeasured features. The matching method and the factors used are not reported in the registry record.

What does a mean score represent? The primary measure is continuous, and the registry identifies the mean as its summary parameter. A mean describes the central value of a group’s scores. The registered endpoint is change from baseline to follow-up at 8-9 months, so interpretation would require knowing both how the scores changed and how changes compared between the care groups. General statistical context: a within-group change is not the same as a between-group effect. A group can change over time for reasons unrelated to the intervention; the comparative estimate is needed to describe the contrast between approaches. The relevant observed means and comparative estimate are not reported in the registry record.

How should a confidence interval be read? The registry names a 95% confidence interval as the dispersion measure for the primary endpoint. General statistical context: a confidence interval conveys uncertainty around an estimate, conditional on the analysis and its assumptions. A narrower interval indicates greater precision than a wider interval, while the interval’s position helps show which effect values are compatible with the data under that procedure. The confidence interval itself is not reported in the registry record, so its precision and the range of effects consistent with the analysis cannot be evaluated.

What is known about weighting and imputation? The primary outcome description notes that baseline outcome comparison P values are based on weighted and imputed data, and says these are the same as adjusted P values in Table 1. This is limited information about a baseline comparison; it does not establish which variables were included in weighting, how missing values were imputed, or how those procedures were used in the primary follow-up analysis. Those details are not reported in the registry record.

General statistical context: weighting can change the contribution of observations to an estimate, often to account for measured differences or a target population. Imputation is a way to address missing values by replacing them with estimates under a specified model. Both methods depend on choices and assumptions. Their presence does not, by itself, show that confounding or missing-data bias has been removed. The registry record does not report enough detail to evaluate those assumptions or procedures.

What does the planning illustration describe? The registry includes assumptions for a planning illustration based on the observed effect: a two-sided significance level of 0.05, equal allocation between the two arms, and a normal approximation. It specifies that the effect to detect is a stated fraction of the observed effect; for time-to-event outcomes the illustration would report total events, and for other outcomes it would report participants per arm. The record does not provide a planning estimate in the registry record for this analysis. General statistical context: planning calculations explore the sample size associated with specified assumptions; they do not describe the precision actually achieved or the chance that the completed study detected an effect. Such calculations are not observed power.

The record does not report the study’s own sample-size justification, whether interim analyses were conducted, or the full statistical analysis plan. No such procedures can be inferred from the design label or planning assumptions. The analysis count is recorded as zero, and the primary outcome results and analysis details are not reported in the registry record. As a result, it is not possible to verify which model, covariates, or inferential procedure were used for the primary comparison.

Why does the design matter? General statistical context: in a nonrandomized study, observed differences can reflect selection into care, site practices, patient characteristics, or other factors as well as the intervention. Adjustment may reduce bias from measured factors when it is appropriately specified, but it cannot ensure control of unmeasured factors. The available baseline note indicates weighting and imputation for a baseline comparison, but does not describe the primary estimate sufficiently to assess its validity. The registry’s design and reporting details therefore call for cautious interpretation rather than an assumption that the groups were exchangeable.

10. Multiplicity, Missing Data and Analysis Populations

The registry lists four outcome measures and names Shared Decision Making and Goal Ascertainment as a secondary outcome. It identifies Treatment Burden as the primary outcome. A hierarchy or procedure for controlling the chance of false-positive findings across multiple outcomes or analyses is not reported in the registry record. The number of analyses is recorded as zero. No interim-analysis plan or other multiplicity strategy is reported in the registry record.

General statistical context: when researchers test multiple outcomes or make multiple comparisons, the chance of at least one apparently unusual result can increase if each test is interpreted on its own. A prespecified hierarchy or adjustment can clarify how evidence across outcomes is to be interpreted. Without a reported plan and results, it is not possible to determine whether or how multiplicity was handled in this study. This does not establish that the analysis was inappropriate; it marks information that is not available in the registry record.

Missing-data methods are only partly described. The primary outcome text says that baseline outcome comparison P values are based on weighted and imputed data and match adjusted P values in Table 1. The imputation method, variables used, assumptions, amount of missing outcome data, and handling of missing follow-up scores are not reported in the registry record. The primary analysis population and any sensitivity analyses are also not reported.

General statistical context: missing-data methods require assumptions about why values are missing and how missingness relates to observed information. Imputation can incorporate uncertainty only when its model and implementation support that purpose. Weighting likewise depends on the variables and model used. The brief baseline note is not enough to evaluate these methods or establish how they affected the primary endpoint analysis.

The registry record does not report an analysis population definition, such as which participants were included in the primary comparison or how deviations from the intended care approach were handled. It is therefore not possible to tell whether the endpoint analysis included all enrolled participants, only those with follow-up measurements, or another population. That uncertainty limits assessment of both the result and its generalizability.

11. Safety Results

The registry reports serious adverse events as affected participants divided by participants at risk.

Deaths

Other (non-serious) adverse events

Participants with at least one non-serious event at or above the registry's 0% reporting threshold.

The registry reports no serious adverse events in either group. The serious-event risk set is 129 for Patient Priorities Care and 135 for usual care, and the reported serious-event count is 0 in each group. The registry also reports no other adverse events in either group, with an at-risk count of 129 for Patient Priorities Care and 135 for usual care. These are descriptive registry figures; they are not a comparison adjusted for differences between groups.

The deaths field records 3 for Patient Priorities Care and 5 for usual care. The registry does not provide further details about these deaths in the available record. The death counts should be read separately from the reported serious adverse-event counts rather than assumed to be included in, or excluded from, a particular event category. The record does not state the relationship between the death counts and the adverse-event categories.

No serious adverse event terms are listed among the leading terms. Because no event details, event definitions, exposure time, or comparative safety analysis are reported, these figures do not establish whether risks differed between groups. General statistical context: a zero recorded event count is not proof that an event is impossible or that two care approaches have identical safety. The figures describe what the registry reports, within its recorded risk sets and reporting framework.

12. What the Result Does, and Does Not, Mean

The registry record establishes the study’s intended comparison and its primary outcome definition. Patient Priorities Care was compared with usual care in a nonrandomized, parallel design involving two matched primary care sites. The primary outcome was change in Treatment Burden Questionnaire score from baseline to follow-up at 8-9 months. The record explains that a lower score reflects less perceived treatment burden.

It does not report the observed primary outcome results. In particular, the registry information available does not state the group changes, the between-group estimate, its confidence interval, or a test result. It therefore does not show whether treatment burden was lower, higher, or similar in one group relative to the other, nor how precisely any contrast was estimated. A conclusion that the intervention worked, did not work, or had no effect would go beyond the reported results.

The nonrandomized design also matters to what any estimate could mean. General statistical context: an association between care approach and outcome in a nonrandomized comparison may include effects of differences in participants, sites, or care processes. Matching and statistical adjustment can address some measured differences, depending on how they are implemented, but cannot guarantee that all relevant differences are controlled. The registry’s limited description of weighting and imputation does not allow assessment of the primary analysis’s safeguards against these sources of bias.

The questionnaire focuses on perceived treatment burden. It is not a direct measure of every goal in the project description, such as whether care was unwanted or unnecessary, whether decisions were shared, or how patients valued the program. The registry lists Shared Decision Making and Goal Ascertainment as a secondary outcome, but does not report its results in the record available for this analysis.

The appropriate reading is therefore bounded: the record describes a completed study and a clinically motivated question, but does not give the quantitative primary outcome findings needed to answer that question. The adverse-event figures are descriptive and do not fill this gap. Further interpretation of effectiveness, precision, or comparative safety is not supported by the reported information.

13. Why This Trial Matters Statistically

This study addresses a statistical challenge common in evaluations of care models: the question is whether a care approach aligned with patients’ priorities is associated with a change in a patient-reported outcome, while the comparison is nonrandomized. That combination makes both the outcome definition and the design especially relevant. Treatment burden is captured as a continuous questionnaire score, and the registry specifies the direction of the scale and the follow-up window. These details help define what a useful estimate would need to describe.

The study’s nonrandomized allocation means that the primary contrast would need to be interpreted in light of possible differences between patients and care settings. The registry describes two matched primary care sites, but does not state the matching procedure or the full adjustment method. This illustrates a broader statistical point: a model’s sophistication cannot be judged from a design label alone. Readers need the estimate, its uncertainty, the analysis population, and enough methodological detail to understand which differences were addressed.

The record also makes the distinction between a study question and a study result important. It reports the outcome and intended comparison, along with a note about weighting and imputation for a baseline comparison, but does not provide the primary outcome estimate or its confidence interval. Without those quantities, the magnitude and precision of the result cannot be assessed. Enrollment and study completion do not substitute for outcome reporting.

Finally, the project’s broader aims include treatment burden, unwanted and unnecessary care, shared decision making, and patients’ assessment of program value. Those concepts are connected, but no one score can represent all of them. The registry’s outcome list and the missing results make it important to distinguish the primary endpoint from wider claims about care experience. The statistical value of this record lies in clarifying the question and its limitations, not in establishing an unreported result.

14. Limitations

• The posted summary statistics are the only data these results rest on; patient-level data, full protocols and statistical analysis plans are not available.
• Recalculated results are simple, unadjusted calculations from posted summaries. They do not replace the sponsor's prespecified analysis.

The main limitation for interpretation is that the registry record does not report the primary outcome estimates or their uncertainty. Without group changes, a comparative estimate, or a confidence interval, the direction, magnitude, and precision of the primary outcome cannot be assessed. The record is marked completed, but completion status does not itself supply outcome results.

Allocation was nonrandomized, and the registry describes two matched primary care sites. The method of matching, the characteristics used in matching, participant assignment procedures, and adjustment details are not reported in the registry record. Potential differences between participants or care settings may therefore affect a comparison, and the information available does not show how fully those differences were addressed.

Masking is listed as single, but the masked party is not reported in the registry record. The available description does not specify outcome collection procedures, intervention fidelity, or the extent to which the two care approaches differed in practice beyond the intervention’s broad description and the comparator’s routine-care description. The intervention wording itself is incomplete in the record available for this analysis.

Although the endpoint and follow-up window are defined, the completeness of follow-up, amount of missing outcome data, primary analysis population, and missing-data assumptions are not reported in the registry record. A note about weighting and imputation applies to baseline outcome comparison P values, but the procedures and their role in the primary analysis are not described in enough detail for assessment. The registry lists four outcome measures, but does not report a multiplicity strategy or the full statistical analysis plan.

The Treatment Burden Questionnaire score captures perceived treatment burden, but the primary endpoint alone does not represent every broader aim described for the program. The available record also does not provide sufficient details about adverse-event definitions or the context for the reported death counts. These reporting gaps limit conclusions about both the primary outcome and wider effects of the care approach.

15. Related Tutorials

16. Related Statistical Calculators

17. Sources

• ClinicalTrials.gov: Patient Priority Care for Older Adults With Multiple Chronic Conditions — NCT04510948.
• Registry record last updated 2025-05-04; status last verified 2025-05.
• Results first posted 2025-05-04.
• Data retrieved from ClinicalTrials.gov on 2026-11-09.
• Group sizes, means, event counts and sponsor-reported p-values are reproduced as posted. Effect estimates, confidence intervals and p-values not attributed to the sponsor are independently calculated from the posted summary statistics.

18. Record Summary

NCT04510948 is a completed, nonrandomized, parallel-group study of Patient Priorities Care compared with usual care for older adults with multiple chronic conditions. The registry describes two matched primary care sites and records enrollment of 264. The study began on 2020-08-14, with primary completion on 2022-01-15.

The primary outcome is change in Treatment Burden Questionnaire score from baseline to follow-up at 8-9 months. Scores range from 0-150, with lower scores indicating less perceived treatment burden. Shared Decision Making and Goal Ascertainment is listed as a secondary outcome.

The registry record does not report the primary outcome estimate, confidence interval, or test result. It records no serious or other adverse events in either group and separately lists 3 deaths in the Patient Priorities Care group and 5 in usual care. These safety figures are descriptive. The nonrandomized design, limited analysis details, and absence of primary outcome results restrict what can be concluded from the record.