The phrase "a straightforward marker" is correct and usable in written English.
It can be used to describe an object or symbol that clearly indicates or signifies something without ambiguity.
Example: "The teacher used a straightforward marker to highlight the key points on the board for better understanding."
Alternatives: "a clear indicator" or "an unambiguous sign".
The apparent decline in seroprevalence observed around the age of 25 years suggests that seroprevalence is not a straightforward marker of all past HPV infection.
In the long term, the lack of a straightforward marker for identifying the PINA-null allele leads us to develop a Pina-N1 marker for detection of Pina-D1b allele [ 29].
It is therefore easiest to perform intervention trials in patients that have been newly diagnosed with T1D as they already carry a straightforward marker of the disease (hyperglycaemia), are certainly highly motivated and the disease course is still amenable to modulation [ 18].
Assays to measure γH2AX are reasonably well developed and are currently being tested clinically with different cancer therapeutics and may therefor prove a relatively straightforward marker to include in clinical studies [ 36- 38].
We also analyzed these data with a straightforward single-marker method to select the most robust loci for candidate gene hypothesis testing.
The power calculation was conducted following a simulation scheme as described by Wang et al. [ 14], assuming (i) a set of five straightforward markers of clinical benefit were present (with an area under the curve of 90%) and (ii) that 25% of patients would derive clinical benefit from erlotinib.
Ask your parents in a straightforward manner.
Write the plot in a straightforward manner.
A straightforward selection of suitable marker candidates from the 'long list' of identified injury or disease specifically changed proteins should arrive at a manageable 'short list' of possible disease marker candidates.
The use of a multinomial logistic regression analysis leading to three p values, as described here (anti-CCP positive RA, anti-CCP negative RA, effect size ratio), represents a straightforward method to classify markers into three meaningful categories or to exclude them from classification, if only one p value out of three is significant.
Immunohistochemical study using neuroendocrine markers allowed a straightforward diagnosis of a low-grade neuroendocrine carcinoma (carcinoid tumor) of the urinary bladder.
