Fig 3. Drug(s) regimens used for premedication before tracheal intubation in the delivery room.

The X axis includes all used premedication regimens with the number of patients in parenthesis. The black bars indicate the percentage of infants who received each drug or drugs combination within the premedicated group. The corresponding Y-axis is on the left side of the graph. The grey bars indicate the number of centers that used each drug or drugs combination at least once. The corresponding Y-axis is on the right side of the graph.