The severity of acne is divided generally into four grades.
The total days are summed and categorized into four grades of severity.
So nurseries and childminders are divided into four grades: outstanding, good, satisfactory and poor.
In our model, we divided the type of coal and gas outbursts into four grades regarded as four normal populations.
The final functional outcome was completed by questionnaires including Odom's criteria [12] which categorized patients' satisfaction into four grades: excellent, good, fair and poor.
Participants were divided into four grades by MIDAS using previously validated scores based on lost-time due to headaches (i.e., minimal, mild, moderate, and severe disability).
The results of freshness monitoring of a seafish package are classified into four grades to indicate the food quality: good, normal, caution, and bad.
LV diastolic function is traditionally classified into four grades (Figure 1) primarily using spectral Doppler of mitral inflow and tissue Doppler of the mitral annulus.
On Day 6 and Day 16 after embryo transfer, they rated side effects and patient inconvenience into four grades: none, mild, moderate and severe by completing a questionnaire.
In the Japanese General Rules for Clinical and Pathologic Studies on Cancer of the Colon, Rectum, and Anus (JGR), node metastases are classified into four grades based on the distribution of metastatic nodes.
Seventy-two hours after exposure to hypoxia, the cerebral cortex was examined to assess the degree of neuronal necrosis and brain damage was classified into four grades of severity, 0 3.
