View source: R/01-opIndicators.R
create_op_visual | R Documentation |
Create older people indicators dataframe for visual impairment from survey data collected using the standard RAM-OP questionnaire.
create_op_visual(svy)
svy |
A dataframe collected using the standard RAM-OP questionnaire |
A tibble of older people indicators on visual impairment
The "Tumbling E" method is described in:
Taylor HR (1978). Applying new design principles to the construction of an illiterate E Chart. Am J Optom & Physiol Optics 55:348
poorVA
Poor visual acuity (correct in < 3 of 4 tests)
Mark Myatt
# Create visual impairment indicators dataset from RAM-OP survey data
# collected from Addis Ababa, Ethiopia
create_op_visual(testSVY)
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