'unchanged trend' is correct and usable in written English.
You can use it when you want to refer to a trend or pattern that has not changed over a period of time. For example: Despite the global economic recession, the stock market has continued to show an unchanged trend of steady growth.
However, daily consumption per capita of roll-your-own cigarettes increased on average by 14.1% per year, from 0.07 to 0.92 units of 0.5 g, with unchanged trends.
In a prospective observational study of 1,340 patients with multiple organ dysfunction syndrome, Cabrè and colleagues [ 42] reported 100% mortality for patients with age over 60 years, a total maximum SOFA greater than 13 on any of the first 5 days of ICU admission, minimum SOFA greater than 10 at all times, and a positive or unchanged SOFA trend over the first 5 days of ICU admission.
Of course it's Al Green, seemingly unchanged by any trend, who owns this moment; he remains the beacon to which everyone else on "Lay It Down" genuflects.
Substitution by an appropriate higher-order interaction term which considers the stoichiometry of quadruplex formation, the proximity relations and the fixation of the probes on the chip-surface is expected to modify the respective contribution but leaves the expected trend unchanged.
Contrary to the significant findings in absolute platelet counts and AJVD in platelets, the AJVD for sP-selectin remained unchanged despite a trend toward higher values.
While its precursors hypoxanthine and guanosine were unchanged and xanthosine trended down in HD, xanthine was markedly reduced in both PHD and HD groups.
If biases in reporting of sexual behaviour remain unchanged over time, trends should still appropriately represent the direction of any changes in sexual behaviour and be useful lead indicators of anticipated trends in the HIV epidemic.
In the case of France and Sweden the basic trend was unchanged.
For China the fundamentals of the economy are sound and the long-term trend remains unchanged.
