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Figure 1 Association between risk factors and adverse events using progressively more specific case definitions. Multivariable odds ratios and 95% confidence intervals (bars) are plotted on a logarithmic scale for risk factors that showed significant associations with the outcome when using the primary definition of adverse events. All odds ratios are adjusted for variables stated in footnote to Table 2. NPH = neutral protamine Hagedorn. Circles = all events; diamonds = all events within 20 min; squares = events within 20 min without other causes; triangles = events within 10 min without other causes (primary definition).
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