The following parameters were considered: Regularity index (expressed in percentages): index of the number of normal step sequence patterns relative to the total number of paw placements.
Results of all three productivity evaluations (grassland, cropland, forest) were scaled to index scores ranging from 1 to 10 showing the relative fertility of soils expressed in relative index values without units.
The results for urea− or urea+ strips were expressed in avidity index (AI), as follows: AI = (urea+ Int Band/urea− Int Band) × 100.
The daughter fertility is expressed in an index of several fertility measures (interval from calving to first insemination, number of inseminations per serviced cow, heat intensity and treatments for reproductive disturbances) from the heifer period, first and second lactation.
For individual public hospitals in each region, the mean cost per DRG is calculated and expressed in a synthetic index, called the ISA (Index Synthétique d'Activité); the number of ISA points represents an index of hospital productivity.
It is a commonly used measure (e.g., [11] [14]), but numerous alternatives exist and will be compared in future work, such as differential expression indices expressed in terms of z-scores or log p-values, or combining the differential expression level and its statistical significance.
These deviations were expressed in a deviation index i.e. the standard deviation of all the deviations in a given library.
Statistical heterogeneity was evaluated through chi-square test [ 19], and expressed in I 2 index, as described by Higgins and colleagues [ 20].
Both fat mass and lean mass were then adjusted for height to give the fat mass index and lean mass index, both expressed in the same kg/m units as body mass index (21, 22).
By analogy with the body mass index (BMI) in humans, a corpulence index (expressed in g/cm2) was calculated from the body weight (g) and the naso-anal length (cm).
