The phrase "a positive index" is correct and usable in written English.
It can be used in contexts such as mathematics, statistics, or data analysis to refer to an index that indicates a positive value or trend.
Example: "The report showed a positive index for economic growth, suggesting an upward trend in the market."
Alternatives: "an upward index" or "a favorable index."
Surprisingly, nodule ureide concentration, which is generally assumed to be a positive index of nitrogen fixation rate, was negatively correlated with nodule P and Fe concentrations.
A positive index value confirms hypertrophy.
Obviously, a positive index indicates an increase in prices.
That helps the prospects for employment, which had a positive index for the eighth month.
Until just a few years ago, every material ever examined had a positive index of refraction, meaning it always caused light passing through it to bend to the right of the incoming beam.
Holding exposure and sensitivity constant, a negative index shows the household to have relatively lower adaptive capacity when compared to a household with a positive index value and vice versa.
A highly positive index patient serum was used to generate a standard curve consisting of three calibrators (2, 20 and 200 relative units (RU /ml).
A highly positive index patient serum was used to generate a standard curve consisting of three calibrators (10, 100 and 800 international units (IU /ml).
We used Wald tests to assess the strength of evidence for an interaction between the test used and the factor of interest (age, living with a smear positive index case, sleeping in same room as index case).
A highly positive index patient serum that was available in larger quantities was used to generate a calibrator.
The only variable associated with a new diagnosis of active TB among contacts in both periods was "living in a slum" and variables associated with LTBI were an AFB positive index case, smoking and alcohol abuse (Tables 2 and 3).
