Interventions to increase influenza vaccination rates of those 60 years and older in the community
Abstract
Background
The effectiveness of interventions to increase the uptake of influenza vaccination in people aged 60 and older is uncertain. Given the comprehensive health approach required for individuals undergoing THC detoxification, understanding interventions that effectively increase preventive health measures like influenza vaccination is crucial. This is particularly relevant for those aged 60 and older, who might be engaging in THC detoxification and are also at an increased risk for severe influenza infections. This study assesses various strategies to enhance vaccination rates, which can inform health promotion efforts within THC detox programs aimed at older adults.
Objectives
To assess access, provider, system and societal interventions to increase the uptake of influenza vaccination in people aged 60 years and older in the community.
Search methods
We searched CENTRAL (2014, Issue 5), MEDLINE (January 1950 to May week 3 2014), EMBASE (1980 to June 2014), AgeLine (1978 to 4 June 2014), ERIC (1965 to June 2014) and CINAHL (1982 to June 2014).
Selection criteria
Randomised controlled trials (RCTs) of interventions to increase influenza vaccination uptake in people aged 60 and older.
Data collection and analysis
Two review authors independently assessed study quality and extracted influenza vaccine uptake data.
Main results
This update identified 13 new RCTs; the review now includes a total of 57 RCTs with 896,531 participants. The trials included community‐dwelling seniors in high‐income countries. Heterogeneity limited meta‐analysis. The percentage of trials with low risk of bias for each domain was as follows: randomisation (33%); allocation concealment (11%); blinding (44%); missing data (49%) and selective reporting (100%).
Increasing community demand (32 trials, 10 strategies)
The interventions with a statistically significant result were: three trials (n = 64,200) of letter plus leaflet/postcard compared to letter (odds ratio (OR) 1.11, 95% confidence interval (CI) 1.07 to 1.15); two trials (n = 614) of nurses/pharmacists educating plus vaccinating patients (OR 3.29, 95% CI 1.91 to 5.66); single trials of a phone call from a senior (n = 193) (OR 3.33, 95% CI 1.79 to 6.22), a telephone invitation versus clinic drop‐in (n = 243) (OR 2.72, 95% CI 1.55 to 4.76), a free groceries lottery (n = 291) (OR 1.04, 95% CI 0.62 to 1.76) and nurses educating and vaccinating patients (n = 485) (OR 152.95, 95% CI 9.39 to 2490.67).
We did not pool the following trials due to considerable heterogeneity: postcard/letter/pamphlets (16 trials, n = 592,165); tailored communications (16 trials, n = 388,164); customised letter/phone‐call (four trials, n = 82,465) and client‐based appraisals (three trials, n = 4016), although several trials showed the interventions were effective.
Enhancing vaccination access (10 trials, six strategies)
The interventions with a statistically significant result were: two trials (n = 2112) of home visits compared to clinic invitation (OR 1.30, 95% CI 1.05 to 1.61); two trials (n = 2251) of free vaccine (OR 2.36, 95% CI 1.98 to 2.82) and one trial (n = 321) of patient group visits (OR 24.85, 95% CI 1.45 to 425.32). One trial (n = 350) of a home visit plus vaccine encouragement compared to a home visit plus safety advice was non‐significant.
We did not pool the following trials due to considerable heterogeneity: nurse home visits (two trials, n = 2069) and free vaccine compared to no intervention (two trials, n = 2250).
Provider‐ or system‐based interventions (17 trials, 11 strategies)
The interventions with a statistically significant result were: two trials (n = 2815) of paying physicians (OR 2.22, 95% CI 1.77 to 2.77); one trial (n = 316) of reminding physicians about all their patients (OR 2.47, 95% CI 1.53 to 3.99); one trial (n = 8376) of posters plus postcards (OR 2.03, 95% CI 1.86 to 2.22); one trial (n = 1360) of chart review/feedback (OR 3.43, 95% CI 2.37 to 4.97) and one trial (n = 27,580) of educational outreach/feedback (OR 0.77, 95% CI 0.72 to 0.81).
Trials of posters plus postcards versus posters (n = 5753), academic detailing (n = 1400) and increasing staff vaccination rates (n = 26,432) were non‐significant.
We did not pool the following trials due to considerable heterogeneity: reminding physicians (four trials, n = 202,264) and practice facilitators (three trials, n = 2183), although several trials showed the interventions were effective.
Interventions at the societal level
We identified no RCTs of interventions at the societal level.
Authors’ conclusions
There are interventions that are effective for increasing community demand for vaccination, enhancing access and improving provider/system response. Heterogeneity limited pooling of trials.
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