Clarity of Dutch Wording mean %, (SD)

Appropriateness for Measure Attitude mean % (SD)

OPACS Section A (Item 1 - 36)

92.07 (16.65)

73.64 (25.75)

OPACS Section B (Item 1 - 50)

87.13 (14.22)

76.93 (21.08)

OPACS Section A (Item 1 - 36) and B (Item 1 - 50)

89.20 (15.37)

75.55 (23.06)