Table 1.

Formula Used to Calculate Continuity Measures

MeasureDefinition
Density (UPC)max where N = total visits
ni = number visits to ith provider
Dispersion (COC) where N = total visits
ni = total visits to ith provider
p = total number of providers
Sequence (SECON) where N = total visits
Entropy/Disorganization (VE)
where
ni = the number of visits to the ith provider
k = the total number of possible providers
N = the total number of visits
• COC, dispersion continuity of care; SECON, sequence continuity; UPC, usual provider continuity; VE, visit entropy.