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Table 3 Association between diphtheria-tetanus-pertussis (DTP) immunisation coverage and mortality rates of sudden infant death syndrome (SIDS) (United States, 1975–2009)

From: Association between sudden infant death syndrome and diphtheria-tetanus-pertussis immunisation: an ecological study


Estimate [per 10% increase]

IRR (95% CI)

DTP immunisation coverage


0.92 (0.87, 0.97)

Infant sleep position (supine)


0.89 (0.86, 0.91)

  1. CI, confidence interval; IRR, incidence rate ratio.