The phrase "a trend for a decrease" is correct and usable in written English.
It can be used when discussing patterns or changes in data, particularly in contexts like economics, health, or social behavior.
Example: "The latest report indicates a trend for a decrease in unemployment rates over the past year."
Alternatives: "a trend towards a decrease" or "a trend indicating a decrease."
The PRevention of knee Osteoarthritis in Overweight Females (PROOF) study (ISRCTN 42823086) described a trend for a decrease in the incidence of knee osteoarthritis (OA) by a tailored diet and exercise program (DEP) or by oral glucosamine sulfate in women at risk for the disease, using a composite clinical and/or radiological outcome.
When treated with various concentrations of recombinant CXCL8 (0.1–100 ng/mL) for a period of 24 72 h, there was a trend for a decrease in proliferation in the HBEC cell line relative to untreated control (data not shown).
We observed a trend for a decrease in MCR of insulin by week 2 (week 0: 8.9±1 vs week 2: 7.94±0.9 ml/kg/min, P = NS, Fig. 4C).
In contrast, locomotor activity was reduced when natural 22-kHz calls were presented, indicated by a decrease when compared versus natural 50-kHz calls (Z = −2.746, p = .003), and a trend for a decrease in comparison to test periods without presentations (Z = −1.955, p = .055), but not in comparison to presentation of noise (Z = −.415, p = .734).734
There was a trend for a decrease in the DHPG NE ratio in male NET+/P heart (P=0.08).
A trend for a decrease in performance following acute cannabis in the high creativity group was also found.
By histological analysis, the cyto-architecture of Fabry mice sciatic nerves showed an increase in mean cross-sectional area accompanied by a decrease in the density of non-myelinated fibers as well as a trend for a decreased number of small myelinated fibers, a well established feature of Fabry disease.
Patients with aberrant EGFR in their tumours only had a significantly greater risk of mortality at 5 years, while there seemed to be a trend for a decreased probability of 5-year survival for patients with aberrant GST-pi in their tumours.
Conversely, there has been a trend for a decreasing proportion of people discharged drug free within the same time frame.
Although not statistically significant (P = 0.06), there was a trend for a decreased total antioxidant potential in plantaris muscles from alcohol-fed rats compared with controls (Fig. 3).
Indoors, there was a trend for a decreasing risk of new shoulder lesions with increasing week of lactation, but the CI included unity.
