The intervention increased uptake of the first ( first-time invitees : @ % vs. @ % , odds ratio -LSB- OR -RSB- = @ , @ % confidence interval -LSB- CI ; @ , @ -RSB- ; previous nonattenders : @ % vs. @ % , OR = @ , @ % CI -LSB- @ , @ -RSB- ) and third ( first-time invitees : @ % vs. @ % , OR = @ , @ % CI -LSB- @ , @ -RSB- ; previous nonattenders : @ % vs. @ % , OR = @ , @ % CI -LSB- @ , @ -RSB- ) vaccinations .