PropertyValue
nif:beginIndex
  • 0 (xsd:integer)
nif:broaderContext
nif:endIndex
  • 230 (xsd:integer)
nif:isString
  • The coefficient of variation between clusters within the matched pairs was conservatively estimated at 0.25.We used the formula proposed by Hayes et al. for a pair-matched cluster design to calculate the required sample size [36].
rdf:type