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. Author manuscript; available in PMC: 2015 Dec 17.
Published in final edited form as: Lancet. 2014 Feb 17;383(9930):1762–1770. doi: 10.1016/S0140-6736(13)61682-7

Table 3.

Haemophilus influenzae type b vaccine-preventable disease incidence for children admitted to hospital with pneumonia in Chile16,17

Control incidence* VE (%) VPDI*†
Radiological consolidation, effusion, bronchial breath sounds, or raised ESR 9.7 26%‡ 2.5
Radiological consolidation or effusion 5.0 22% 1.1

VE=Vaccine effectiveness. VPDI=vaccine-preventable disease incidence. ESR=erythrocyte sedimentation rate.

*

All incidences are per 1000 person-years of follow-up.

†

VPDI is calculated as vaccine effectiveness multiplied by control group incidence, and is shown per 1000 person-years of follow-up in children from age of first vaccination to age 2 years.

‡

VE has 95% CIs that exclude 0.