Table 2.

Adjusted OR From Conditional Logistic Regression Analysis for the MMR Vaccine-Related Symptoms and Signs Among the 14- to 18-Month-Old Twins

Symptom or SignOR95% CIPValue
Fever ≥103.1°F (≥39.5°C)* 2.831.47–5.45.002
Fever ≥101.3°F (≥38.5°C) 3.282.23–4.82<.001
Fever ≥99.5°F (≥37.5°C)* 2.661.66–3.08<.001
Respiratory symptoms 2.661.66–3.08<.05
Nausea or vomiting§ .70.44–1.10>.05
Diarrhea 1.18.75–1.87>.05
Exanthema1.771.27–2.47<.001
Arthralgia 3.661.74–7.70<.001
Conjunctivitis 2.491.59–3.90<.001
Staying in bed* 1.831.10–3.03.02
DrowsinessModel not fitted
Irritability* 1.601.19–2.16.002
Any MMR-related event* 1.621.30–2.03<.001
  • CI indicates confidence interval.

    The ratios were adjusted for the effects of the injection order and the following events:

  • * gastroenteritis, nausea or vomiting, and respiratory symptoms;

  • gastroenteritis, nausea or vomiting, respiratory symptoms, and allergy;

  • nausea or vomiting;

  • § diarrhea; and

  • respiratory symptoms.