Table 3

Impact of differing time-frames on correlations between methods
Prescription refill Physician rating Plasma concentration Self-report
r p r p r p
Prescription refill – previous month 0.090 0.349 −0.071 0.470 0.112 0.276
Prescription refill – 3months 0.105 0.226 0.050 0.573 0.115 0.218
Prescription refill – 4months 0.194 0.021* 0.175 0.040* 0.167 0.069
Prescription refill – 6months 0.243 0.006* 0.251 0.005* 0.189 0.050#

*indicates significant correlation: p<0.05, # indicates significant correlation: p=0.050.

Oberguggenberger et al.

Oberguggenberger et al. BMC Cancer 2012 12:474   doi:10.1186/1471-2407-12-474

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