Although the time periods of the GPS data and GRACE data are not the same, the constant trend in the GPS data is able to resolve those difficulties.
The ratio for corn has shown a constant trend in the recent years.
Dependent on the level of baseline immunization coverage, expectation of a continued constant trend in immunization coverage may have yielded an overestimate of the extent of disruption in immunization coverage in some settings.
To account for possibly non-constant trends in the relation between migration status and mortality, we preferred to run separate models for each period rather than to introduce interaction terms between migration status and period.
And the warming turned to declining until the 1980s and then exhibited almost constant trends for approximately three decades (excluding the trends in NOAA-old).
The follow-up period in the current study was 90 days during which patients showed a gradual and constant trend of improvement in their headache frequency and intensity; however, the duration of the effect of BTX-A for CTTH was not studied in the current trial beyond this period, because our study focused on one-session injection with 90 days follow-up period.
While participation in training courses may be expected to increase during recessions, our descriptive data show a fairly constant trend for educational level in the overall adult population.
The constant trend observed in older patients suggests this was not a major concern.
In addition, their constant trends were approximately 0.08 °C/decade, on average, from the 1980s to the 2000s, while the NOAA-old trend kept decreasing during the last three decades at a rate similar to that during previous decades after World War II.
Contrary to declining incidence and mortality trends observed for men in the other racial/ethnic groups, men in PR had a constant trend for incidence and increasing mortality trends.
Observed and fitted five-year breast cancer relative survival trends over time (assuming a constant trend before 1972 and dynamic trend after 2007) are shown in Figure 4.
