Table 1.
Variable | Category | Primary cohort (SmartVax) N=17 458† |
Supplementary cohort (Vaxtracker) N=346 |
Overall N=17 804‡ |
Median age (IQR) | 72 years (70–75) | 73 years (71–76) | 72 years (70–75) | |
Sex n (%) |
Male | 8214 (47.1) | 163 (47.1) | 8377 (47.1) |
Female | 9241 (52.9) | 183 (52.9) | 9424 (52.9) | |
Indigenous status n (%) |
Aboriginal | 59 (0.4) | 2 (0.6) | 61 (0.4) |
Torres Strait Islander | 8 (0.06) | 0 | 8 (0.05) | |
Both | 5 (0.03) | 0 | 5 (0.03) | |
Total | 72 (0.5) | 2 (0.6) | 74 (0.5) | |
Concomitant vaccination§ n (%) |
At least one concomitant vaccine | 3993 (22.9) | 57 (16.5) | 4050 (22.8) |
23vPPV | 657 (3.8) | 11 (3.2) | 668 (3.8) | |
Influenza vaccine | 3218 (18.4) | 45 (13.0) | 3263 (18.3) | |
Diphtheria/tetanus vaccine | 235 (1.3) | 3 (0.9) | 238 (1.3) | |
Underlying medical condition n (%) |
Yes | NA | 143 (41.3) | NA |
No | NA | 203 (58.7) | NA |
*SmartVax participants responding to an opt-out SMS within 7 days of vaccination between November 2016 and November 2018; Vaxtracker participants responding to an opt-in survey via SMS or email within 7 days of survey receipt following vaccination between December 2016 and May 2018.
†Denominator 17 455 for sex which was missing in three reports; denominator 14 342 for Indigenous status, which was missing in 3116 reports.
‡Denominator 17 801 for sex which was missing in three reports; denominator 14 688 for indigenous status, which was missing in 3116 reports.
§Some participants received more than one concomitant vaccine.
NA, not available; SMS, short message service; 23vPPV, 23-valent pneumococcal vaccine.