FNOA: Aging Programs (2012)

Citation:
 
Study Design:
Class:
- Click here for explanation of classification scheme.
Quality Rating:
Research Purpose:

The purpose of the study was to identify themes and significant issues regarding the experiences of participants in a program to provide fresh produce to homebound senior adults.

Inclusion Criteria:

  • Participants were homebound senior adults receiving home delivered meals through the Seattle (WA) Senior Services Meals-on-Wheels program
  • Participants volunteered to be interviewed for the research study.

 

Exclusion Criteria:

No specific exclusion criteria were identified. 

Description of Study Protocol:

Recruitment

  • A recruitment flyer, seeking volunteers for an interview, was included with the meals and food provided to the seniors in the Meals-on-Wheels program
  • A $10 incentive was offered to those who volunteered for the interview
  • The number of subjects who volunteered for the study exceeded the number that could be accommodated in the research project. Therefore, the final study participants were selected by the researchers on the basis of the volunteers' geographic location within the Seattle/King County, WA, area served by the Meals-on-Wheels program, and on racial, ethnic and age diversity of the homebound Meals-on-Wheels population. 

Design

Cross-sectional, descriptive study:

  • All participants were receiving home-delivered Meals-on-Wheels. Throughout a 20-week period from June through October, 2001, a bag of fresh fruits and vegetables from local farmers' markets was included every other week with the regular meals, for a total of 10 fresh produce deliveries. The produce was provided through the U.S. Department of Agriculture (USDA) Senior Farmers' Market Nutrition Pilot Program (SFMNPP).
  • A newsletter included with the produce listed the fruit and vegetable items and provided recipes, preparation methods and information on nutrition and about the local farmers
  • The recruitment flyer was included in the 10th week of the 20-week program, requesting participation in an interview regarding the produce
  • Interviews lasting 20 to 45 minutes were conducted with the selected subjects in the their homes during the 12th to 18th week of the program. A semi-structured questionnaire with both direct and open-ended questions was developed to identify benefits and barriers to produce use, assess behaviors that sustained or increased fresh fruit and vegetable consumption and satisfaction with the produce program. Probing was used to help subjects recall their experiences in using the produce. The interviews were audio-recorded and transcribed to identify common themes in the following areas:
    • General thoughts about the fresh produce program
    • Utilization of the fresh produce items
    • Ability to prepare the fresh produce
    • Quality of the fruits and vegetables
    • Usefulness of the newsletter
    • Interest in future participation in the produce program
    • Quoted remarks of the participants were used to substantiate the themes.

Intervention

All individuals participated in the same program.

Statistical Analysis

  • Data was validated by triangulation, comparing the qualitative data with the quantitative evaluation of participants' fruit and vegetable intake and by comparison of the qualitative data with the attitudes, social influence and self-efficacy (ASE) model
  • Sample size was determined by methods for qualitative research data for non-homogeneous samples. These methods were described and referenced.
Data Collection Summary:

Timing of Measurements

One interview was held with each of the selected study participants between the 12th and 18th week of the 20-week program.

Dependent Variables

Interviews lasting 20 to 45 minutes were conducted with the selected subjects in the their homes during the 12th to 18th week of the program. A semi-structured questionnaire with both direct and open-ended questions was developed to identify benefits and barriers to produce use, assess behaviors that sustained or increased fresh fruit and vegetable consumption and satisfaction with the produce program. Probing was used to help subjects recall their experiences in using the produce. The interviews were audio-recorded and transcribed to identify common themes in the following areas: 

  • General thoughts about the fresh produce program
  • Utilization of the fresh produce items
  • Ability to prepare the fresh produce
  • Quality of the fruits and vegetables
  • Usefulness of the newsletter
  • Interest in future participation in the produce program
  • Quoted remarks of the participants were used to substantiate the themes.

Independent Variables

  • All participants were receiving home-delivered Meals-on-Wheels. Throughout a 20-week period from June through October, 2001, a bag of fresh fruits and vegetables from local farmers' markets was included every other week with the regular meals, for a total of 10 fresh produce deliveries. The produce was provided through the U.S. Department of Agriculture (USDA) Senior Farmers' Market Nutrition Pilot Program (SFMNPP).
  • A newsletter included with the produce listed the fruit and vegetable items and provided recipes, preparation methods and information on nutrition and about the local farmers.

 

 

Description of Actual Data Sample:
  • Initial N: 28; (21 females, seven males)
  • Attrition (final N): 27 (no data on the one withdrawal)
  • Age: 60 to 90 or more; 60 to 79, N=21 (75%); 80 to 90+, N=5 (18%); Unknown, N=2 (7%)
  • Ethnicity: White non-Hispanic, 66%; Non-white or Hispanic, 26%; Unknown, 7%.

Other Relevant Demographics

Most (74%) of participants lived alone; the majority lived in public housing, senior housing or other rental units.

Comparison of study participants to the Seattle area Meals-on-Wheels population as a whole:

  • Gender proportion was similar
  • Ethnic minority groups were under-represented
  • Total age range (60 to 90 years or more) was similar, but within that range, the older (80 to 90 years or more) ages were under-represented.

Location

All participants lived within Seattle and King County in Washington state.

Summary of Results:

The interview data was organized into four major themes.

  • Utilization of the fresh produce: Produce was well utilized, especially fruit, which required less preparation. Participants who had a caregiver helping with meals had higher utilization.
  • Participants' perceived benefits from SFMNPP: Participants appreciated the fresh produce. Many believed that eating fresh produce was beneficial to their health
  • Newsletter-supported SFMNPP objectives: The majority of the participants read the newsletter and found the information useful
  • Participant satisfaction with SFMNPP: All participants liked the program and would participate in the future if the program continued. No themes regarding general dissatisfaction with the program were revealed by the participants. 

Other Findings

  • Although the questionnaire did not specifically ask about financial or health status, some study subjects also included personal information that related to their motivation and ability to use the produce. Many stated that they would not be able to buy the produce for themselves. The authors identified health status and physical and cognitive disabilities as key factors influencing intake of fresh fruits and vegetables. 
  • The qualitative findings reported in this article were consistent with quantitative data on fruit and vegetable intake of the same participants (reported elsewhere), which showed an increased intake.  

 

Author Conclusion:

The study provides insight into factors that successfully increase fruit and vegetable intake among homebound seniors. The free, home-delivered produce eliminated two major barriers of many senior adults:

  • The inability to go shopping
  • Lack of money to purchase fresh produce.

The program influenced the three aspects of the ASE model, which include attitude, social influence, and self-efficacy. Enjoyment in receiving and eating the produce and belief in the health benefits affected attitude toward consumption. Delivery staff and the newsletter provided social influence. Nutrition information increased abilities to use the produce and supported self-efficacy. The positive attitude of the participants, utilization of the produce and increased number of produce servings were consistent. According to the ASE model, these factors would strengthen the intention to continue the target behavior and to overcome barriers that would prevent doing so. 

 

Funding Source:
Government: Centers for Disease Control and Prevention supported the study. Food and Nutrition Services of the USDA funded the Senior Farmers' Market Nutrition Pilot Program (SFMNPP) in Washington state
Reviewer Comments:

 

  • Quotations of participants were used to substantiate the identified themes although there is no indication of the number of subjects who made similar comments supporting a particular theme. Some identified factors for fruit and vegetable intake, such as health status and physical and cognitive disabilities, can be age-related. Compared to the Seattle area Meals-on-Wheels population, a smaller proportion of the study participants, 18% versus 38%, were 80 years or older. It is not clear who conducted the interviews.
  • Limitations of the study included the small sample size and the volunteer participation of the study subjects. It is not known how they may have differed from those who did not volunteer for the interview. For example, the interview participants were satisfied with the produce program; those who did not volunteer for the interview might have had other views and different themes might have emerged. Ethnic minorities were under-represented in study population compared to the Seattle area Meals-on-Wheels recipients. The use of a semi-structured questionnaire may have limited the comments, and therefore the themes, identified in the study.
Quality Criteria Checklist: Primary Research
Relevance Questions
  1. Would implementing the studied intervention or procedure (if found successful) result in improved outcomes for the patients/clients/population group? (Not Applicable for some epidemiological studies) Yes
  2. Did the authors study an outcome (dependent variable) or topic that the patients/clients/population group would care about? Yes
  3. Is the focus of the intervention or procedure (independent variable) or topic of study a common issue of concern to dieteticspractice? Yes
  4. Is the intervention or procedure feasible? (NA for some epidemiological studies) Yes
 
Validity Questions
1. Was the research question clearly stated? Yes
  1.1. Was (were) the specific intervention(s) or procedure(s) [independent variable(s)] identified? Yes
  1.2. Was (were) the outcome(s) [dependent variable(s)] clearly indicated? Yes
  1.3. Were the target population and setting specified? Yes
2. Was the selection of study subjects/patients free from bias? No
  2.1. Were inclusion/exclusion criteria specified (e.g., risk, point in disease progression, diagnostic or prognosis criteria), and with sufficient detail and without omitting criteria critical to the study? No
  2.2. Were criteria applied equally to all study groups? N/A
  2.3. Were health, demographics, and other characteristics of subjects described? No
  2.4. Were the subjects/patients a representative sample of the relevant population? No
3. Were study groups comparable? N/A
  3.1. Was the method of assigning subjects/patients to groups described and unbiased? (Method of randomization identified if RCT) N/A
  3.2. Were distribution of disease status, prognostic factors, and other factors (e.g., demographics) similar across study groups at baseline? N/A
  3.3. Were concurrent controls or comparisons used? (Concurrent preferred over historical control or comparison groups.) N/A
  3.4. If cohort study or cross-sectional study, were groups comparable on important confounding factors and/or were preexisting differences accounted for by using appropriate adjustments in statistical analysis? N/A
  3.5. If case control study, were potential confounding factors comparable for cases and controls? (If case series or trial with subjects serving as own control, this criterion is not applicable.) N/A
  3.6. If diagnostic test, was there an independent blind comparison with an appropriate reference standard (e.g., "gold standard")? N/A
4. Was method of handling withdrawals described? Yes
  4.1. Were follow-up methods described and the same for all groups? N/A
  4.2. Was the number, characteristics of withdrawals (i.e., dropouts, lost to follow up, attrition rate) and/or response rate (cross-sectional studies) described for each group? (Follow up goal for a strong study is 80%.) Yes
  4.3. Were all enrolled subjects/patients (in the original sample) accounted for? Yes
  4.4. Were reasons for withdrawals similar across groups? N/A
  4.5. If diagnostic test, was decision to perform reference test not dependent on results of test under study? N/A
5. Was blinding used to prevent introduction of bias? No
  5.1. In intervention study, were subjects, clinicians/practitioners, and investigators blinded to treatment group, as appropriate? N/A
  5.2. Were data collectors blinded for outcomes assessment? (If outcome is measured using an objective test, such as a lab value, this criterion is assumed to be met.) No
  5.3. In cohort study or cross-sectional study, were measurements of outcomes and risk factors blinded? No
  5.4. In case control study, was case definition explicit and case ascertainment not influenced by exposure status? N/A
  5.5. In diagnostic study, were test results blinded to patient history and other test results? N/A
6. Were intervention/therapeutic regimens/exposure factor or procedure and any comparison(s) described in detail? Were interveningfactors described? Yes
  6.1. In RCT or other intervention trial, were protocols described for all regimens studied? N/A
  6.2. In observational study, were interventions, study settings, and clinicians/provider described? Yes
  6.3. Was the intensity and duration of the intervention or exposure factor sufficient to produce a meaningful effect? N/A
  6.4. Was the amount of exposure and, if relevant, subject/patient compliance measured? N/A
  6.5. Were co-interventions (e.g., ancillary treatments, other therapies) described? N/A
  6.6. Were extra or unplanned treatments described? N/A
  6.7. Was the information for 6.4, 6.5, and 6.6 assessed the same way for all groups? N/A
  6.8. In diagnostic study, were details of test administration and replication sufficient? N/A
7. Were outcomes clearly defined and the measurements valid and reliable? ???
  7.1. Were primary and secondary endpoints described and relevant to the question? Yes
  7.2. Were nutrition measures appropriate to question and outcomes of concern? Yes
  7.3. Was the period of follow-up long enough for important outcome(s) to occur? N/A
  7.4. Were the observations and measurements based on standard, valid, and reliable data collection instruments/tests/procedures? Yes
  7.5. Was the measurement of effect at an appropriate level of precision? ???
  7.6. Were other factors accounted for (measured) that could affect outcomes? ???
  7.7. Were the measurements conducted consistently across groups? N/A
8. Was the statistical analysis appropriate for the study design and type of outcome indicators? Yes
  8.1. Were statistical analyses adequately described and the results reported appropriately? Yes
  8.2. Were correct statistical tests used and assumptions of test not violated? Yes
  8.3. Were statistics reported with levels of significance and/or confidence intervals? N/A
  8.4. Was "intent to treat" analysis of outcomes done (and as appropriate, was there an analysis of outcomes for those maximally exposed or a dose-response analysis)? N/A
  8.5. Were adequate adjustments made for effects of confounding factors that might have affected the outcomes (e.g., multivariate analyses)? N/A
  8.6. Was clinical significance as well as statistical significance reported? Yes
  8.7. If negative findings, was a power calculation reported to address type 2 error? N/A
9. Are conclusions supported by results with biases and limitations taken into consideration? Yes
  9.1. Is there a discussion of findings? Yes
  9.2. Are biases and study limitations identified and discussed? Yes
10. Is bias due to study's funding or sponsorship unlikely? Yes
  10.1. Were sources of funding and investigators' affiliations described? Yes
  10.2. Was the study free from apparent conflict of interest? Yes