The NIPS evaluates six criteria, each scored between 0 and 1, except for crying, which can be scored up to 2. These criteria include:
1. Facial Expression 2. Crying 3. Breathing Patterns 4. Arms Movement 5. Legs Movement 6. Alertness
The total score ranges from 0 to 7, with higher scores indicating greater pain. For instance, a score of 0-2 suggests mild or no pain, whereas scores of 3 or higher indicate moderate to severe pain.