Table 2.

Likert scale to score the infant's saliva collection intolerance

Score	Definition
0	Continuously normal, relaxed facial expression according to COMFORTneo
1	Totally relaxed facial expression for almost all of the time (minus 2 seconds)
2	Relaxed facial expression for most of the time (minus <10 seconds)
3	A lot of times a not totally relaxed expression (>10 seconds <1 minute)
4	A continuously intolerant expression or crying (abortion of the collection)