Table 1.

Formula Used to Calculate Continuity Measures

Density (UPC)maxEmbedded Image where N = total visits
ni = number visits to ith provider
Dispersion (COC)Embedded Image where N = total visits
ni = total visits to ith provider
p = total number of providers
Sequence (SECON)Embedded Image where N = total visits
Embedded Image
Entropy/Disorganization (VE)Embedded Image
where Embedded Image
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.