A metropolitan hospital implemented rigorous protocols to reduce the number of needlestick injuries. These injuries can occur when medical professionals draw blood, administer medications, or dispose of used needles. To monitor the effectiveness of new protocols, hospital staff record the date and time of each needlestick injury.
The staff create a T chart to monitor the rate of needlesticks.
One point failed Test 2 (9 points in a row on same side of center line). The rate of needle sticks was lower than expected during this time.