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. 2022 Feb;28(2):314–322. doi: 10.3201/eid2802.204324

Table 1. Healthcare use and sick leave days for persons with TBE and the matched referent cohort, Sweden, 1998–2014*.

Variable Within 3 y before TBE After TBE
Within 1 y Within 3 y Within 5 y
Days hospitalized
Case cohort, mean (no.) 1.35 (2,228) 11.50 (2,274) 12.73 (1,863) 14.69 (1,466)
Referent cohort, mean (no.) 2.07 (6,684) 1.12 (6,822) 3.27 (5,589) 5.64 (4,404)
Difference in means
0.28
10.38†
9.46†
9.05†
Specialist outpatient visits
Case cohort, mean (no.) 3.92 (2,228) 3.65 (2,270) 6.78 (1,863) 9.45 (1,466)
Referent cohort, mean (no.) 3.31 (6,684) 1.22 (6,810) 3.53 (5,583) 5.74 (4,398)
Difference in means
0.62†
2.42†
3.25†
3.71†
Days of sick leave
Case cohort, mean (no.) 63.3 (1406) 66.0 (1,434) 122.6 (1,169) 144.0 (902)
Referent cohort, mean (no.) 51.4 (2765) 10.7 (2,802) 45.9 (2,286) 78.1 (1,793)
Difference in means
11.82‡
55.32†
76.66†
65.85†
Primary healthcare visits
Case cohort, mean (no.) 9.19 (280) 6.44 (276) 14.43 (228) 23.29 (175)
Referent cohort, mean (no.) 10.55 (779) 3.90 (763) 11.54 (638) 19.55 (502)
Difference in means −1.36 2.54† 2.89§ 3.74

*TBE, tick-borne encephalitis. †Significance at the 1% level. ‡Significance at the 5% level. §Significance at the 10% level.