Se trata de la medida idónea que los terapeutas ocupacionales pueden adoptar en el contexto.

Saludos.

he encontrado varias opciones con esta expresión

no es esa la idea?

No me parece que el término correcto sea sensible porque no es el mismo significado que se expresa en inglés. Y tampoco me gusta adecuada porque something sensible is not necessarily appropiate. En the free dictionary encontré varias acepciones y sinónimos, y me parece que la definición o significado que más se acerca a tu texto es aquella que habla de características un poco de empatía, consideración, delicadeza. Es decir, la medida debe ser válida, confiable y "amable" hacia el paciente, me parece que el sentido más preciso va por ahí.
Te dejo el enlace aquí, mis sugerencias no acaban de encantarme pero creo que es lo que más se acerca.
Besos, Lydia.
Adj. 1. sensitive - responsive to physical stimuli; "a mimosa's leaves are sensitive to touch"; "a sensitive voltmeter"; "sensitive skin"; "sensitive to light"
responsive - readily reacting or replying to people or events or stimuli; showing emotion; "children are often the quickest and most responsive members of the audience"
sensible, sensitive - able to feel or perceive; "even amoeba are sensible creatures"; "the more sensible parts of the skin"
susceptible - (often followed by `of' or `to') yielding readily to or capable of; "susceptible to colds"; "susceptible of proof"
insensitive - not responsive to physical stimuli; "insensitive to radiation"
2. sensitive - being susceptible to the attitudes, feelings, or circumstances of others; "sensitive to the local community and its needs"
responsive - readily reacting or replying to people or events or stimuli; showing emotion; "children are often the quickest and most responsive members of the audience"
insensitive - deficient in human sensibility; not mentally or morally sensitive; "insensitive to the needs of the patients"
3. sensitive - able to feel or perceive; "even amoeba are sensible creatures"; "the more sensible parts of the skin"
sensible
aware, cognisant, cognizant - (sometimes followed by `of') having or showing knowledge or understanding or realization or perception; "was aware of his opponent's hostility"; "became aware of her surroundings"; "aware that he had exceeded the speed limit"
conscious - knowing and perceiving; having awareness of surroundings and sensations and thoughts; "remained conscious during the operation"; "conscious of his faults"; "became conscious that he was being followed"
sensitive - responsive to physical stimuli; "a mimosa's leaves are sensitive to touch"; "a sensitive voltmeter"; "sensitive skin"; "sensitive to light"
4. sensitive - hurting; "the tender spot on his jaw"
sore, tender, raw
painful - causing physical or psychological pain; "worked with painful slowness"
5. sensitive - of or pertaining to classified information or matters affecting national security
classified - official classification of information or documents; withheld from general circulation; "thousands of classified documents have now been declassified"

"Sensitive", en este contexto, quiere decir "capaz de detectar diferencias mínimas", de acuerdo con la primera definición de "sensitive" en el diccionario de Oxford:

"quick to detect or respond to slight changes, signals, or influences"
the new method of protein detection was more sensitive than earlier ones"
http://oxforddictionaries.com/definition/sensitive

Por lo tanto, una "sensitive measure" es una medida que registra con precisión: una medida precisa.

Decir que una medida es "adecuada" significa que conviene utilizar esta medida en vez de las posibles alternativas, y eso no es en absoluto lo que quiere decir "sensitive".

"The world's most sensitive scales can now detect a cluster of xenon atoms a billion, trillion times lighter than a gram."
http://www.impactlab.net/2005/03/30/the-worlds-most-sensitiv...

¿Podría ser que el autor del texto original esté usando *sensitive* en vez de sensible measure?
Atención al false friend:
*Sensitive* equivale a nuestro "sensible".
Sensible en inglés proviene de common sense. Propongo pues la equivalencia en español: "medida razonable".

Los matices de si la medida es adecuada o idónea... vienen ya expresados en esa misma frase por el adjetivo valid.
Saludos,