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Table 2 Differences in knowledge regarding influenza vaccine uptakes among older participants before and after the free influenza vaccination policy implementation in Shenzhen, China

From: Can primary care physician recommendation improve influenza vaccine uptake among older adults? A community health centre-based experimental study in China

Characteristic

Pre-implementationhN = 1200

Post-implementationhN = 958

Diff. (%)

N (%)

N (%)

Awareness of influenza vaccine uptakes among older participantsa

634(52.8)

742(77.5)

24.7

Awareness of free influenza vaccination program for older participantsb

485(40.4)

596(62.2)

21.8

Ever know about influenza vaccination sitec

571(47.6)

812(84.8)

37.2

Correct knowledge of priority vaccination populationsd

262(21.8)

386(40.3)

18.5

Correct knowledge of vaccination frequencye

273(22.8)

395(40.8)

18.0

Correct knowledge of the most suitable time to be vaccinatedf

235(19.6)

324(33.8)

14.2

Correct knowledge of the vaccination protection durationg

139(11.6)

318(33.2)

21.6

  1. P values were calculated from Chi-square tests and group comparisons of percentages of all questions were less than 0.05
  2. a Participants who answered they have ever heard about influenza vaccine uptakes among older participants were considered that they have the awareness but did not indicate correct knowledge of influenza vaccination offered to older adults
  3. b Participants who answered they have ever heard about the free influenza vaccination program for older adults were considered to have the awareness but did not indicate correct knowledge of the free influenza vaccination program
  4. c Participants who answered they have known about influenza vaccination site were considered to have the awareness but did not indicate correct knowledge of influenza vaccination site
  5. d Participants who selected following answers: ‘Healthcare workers’, ‘vulnerable populations and workers in care homes’, ‘students’, ‘older adults aged 60 years and above, 6-month to 5-year-old children’, ‘patients with certain chronic diseases’, ‘carers and family members of under 6-month-old babies’, and ‘women who are pregnant or ready to give birth during flu seasons’, were considered to have the correct knowledge of the prioritised populations of being vaccinated
  6. e Participants who answered ‘Once a year’ were considered to have the correct knowledge of the vaccination frequency
  7. f Participants who answered ‘Usually in autumn and winter’ were considered to have the correct knowledge of suitable time to be vaccinated
  8. g Participants who answered ‘Six to eight months’ were considered to have the correct knowledge of vaccination protection duration
  9. h Pre-implementation means prior the city-wide free influenza vaccination for older adults program was implemented. Post-implementation means after the city-wide free influenza vaccination for older adults program was implemented. Shenzhen implemented a city-wide free influenza vaccination for older adults program since October 2016