A method of analyzing particles in a particle analyzer, comprising: preparing a fluid sample containing particles for analysis in the particle analyzer; sensing signals using an electrical or optical measurement device, each of the signals corresponding to one or more events detected in a sub-sample of the fluid sample flowing through a measurement region in the particle analyzer, wherein the or each event is the detection of a particle within the measurement region; determining the existence of coincident events in the one or more events based on: measuring, for a measurement parameter from at least one said measurement device, a peak of each of the signals, wherein the peak is the maximum signal value of the signal, an area of each of the signals, first and second points of each of the signals using that measurement device, wherein the first and second points have a signal value corresponding to a predetermined portion of the peak, and the signal value at a center point of each of the signals between the first and second points; comparing a ratio of the signal value at the center point to the area to a threshold value; and determining the existence of the coincident events if the ratio is less than the threshold ratio; and generating a results data based upon the coincident events and non-coincident events of the one or more events. preparing a fluid sample containing particles for analysis in the particle analyzer; sensing signals using an electrical or optical measurement device, each of the signals corresponding to one or more events detected in a sub-sample of the fluid sample flowing through a measurement region in the particle analyzer, wherein the or each event is the detection of a particle within the measurement region; determining the existence of coincident events in the one or more events based on: measuring, for a measurement parameter from at least one said measurement device, a peak of each of the signals, wherein the peak is the maximum signal value of the signal, an area of each of the signals, first and second points of each of the signals using that measurement device, wherein the first and second points have a signal value corresponding to a predetermined portion of the peak, and the signal value at a center point of each of the signals between the first and second points; comparing a ratio of the signal value at the center point to the area to a threshold value; and determining the existence of the coincident events if the ratio is less than the threshold ratio; and measuring, for a measurement parameter from at least one said measurement device, a peak of each of the signals, wherein the peak is the maximum signal value of the signal, an area of each of the signals, first and second points of each of the signals using that measurement device, wherein the first and second points have a signal value corresponding to a predetermined portion of the peak, and the signal value at a center point of each of the signals between the first and second points; comparing a ratio of the signal value at the center point to the area to a threshold value; and determining the existence of the coincident events if the ratio is less than the threshold ratio; generating a results data based upon the coincident events and non-coincident events of the one or more events.