The reduced heritability values may be attributable to the different populations surveyed, differences in the growing environments, or to the relatively low number of replications examined for each line in their study [ 18].
CRC: Colorectal cancer; FOBT: Fecal occult blood test; PCP: Primary care provider; CCHS: Canadian community health survey; DD: Difference-in-differences design; DDD: Difference-in-difference-in-differences design; CCC: ColonCancerCheck; ON: Ontario; Post: Post Intervention Period.
Differing rates among these studies may have been reported due to geographic differences, differences in survey questions, differences in survey populations, and changes in practice over time.
Biomass spectra showed large differences in relation to depth but only slight between-survey differences, which mainly occurred in the upper slope.
In the latter surveys, differences in mean Pv and Pf fluorescent signal intensity between A+/A− and A+/A+ children were also compared using Mann-Whitney U tests.
We also surveyed differences in cell wall composition using near infrared spectroscopy (NIR) and comprehensive microarray polymer profiling (CoMPP).
The magnitudes of cross-survey differences in levels and trends between those with a high school diploma and those with at least some college are similar.
Cross-survey differences in the steady changes in responses over time would require a more subtle form of framing or ordering effect.
Although we did not have demographic data available from the patients surveyed, differences in age, education level, and other demographic factors may contribute towards the differences seen between physician and patient attitudes towards CAM.
Changes in these variables, however, are modest and gradual over the period of analysis, and cross-survey differences remain fairly constant over time, which suggests that discrepancies in self-rated health trends are not explained by differences in sample composition.
