Appendix 1: Codes used for thematic analysis of semi-structured interviews

BODY FUNCTION
ICF category / Reported code
b110 (Consciousness functions)** / Black out
Fainted
b114 (Orientation functions)** / Problems with orientation
b130 (Energy and drive functions) / Decreased appetite
b134 (Sleep functions) / Sleep more
b140 (Attention functions) / Problems concentrating
b144 (Memory functions) / Problems with memory
b152 (Emotional functions) / Cautious
Depression
Embarrassment
Fear and anxiety
Concerns about falls
No control
b210 (Seeing functions) / Perception of movement
See flash
Vision change
b230 (Hearing functions) / Bothered by noise
b240 (sensations associated with hearing and vestibular function) / Dizziness, imbalance, lightheadedness, nausea, spinning, and vertigo
b280 (Sensation of pain) / Headache
b455 (Exercise tolerance functions) / Fatigue
b730 (Muscle power functions) / Weak legs
b770 (Gait pattern functions) / Slowed down
ACTIVITIES AND PARTICIPATION
ICF category / Reported code
d230 (Carrying out daily routine) / Debilitating
Need to stop in the middle of activities
Not active
d410 (Changing basic body position) / Problems bending over
Problems looking up
Problems standing
Problems turning head
Trouble moving head with body
d415 (Maintaining a body position) / Need to lie down
Need to sit
Need to stabilize self
d475 (Driving) / Reduced ability to drive
d450 (Walking) / Problems walking
Move too quickly
d460 (Moving around in different locations) / Problems with stairs
d465 (moving around using equipment) / Need walker/cane
D640 (Doing housework) / Problems with housework
d845 (Acquiring, keeping, and terminating a job) / Problems maintaining job
d740 (Formal relationships), d750 (Informal social relationships), d760 (Family relationships) / Isolation
d920 (Recreation and Leisure) / Reduced ability to travel
Reduced participation relative to expectations
ENVIRONMENT
ICF category / Reported code
e310 (Immediate family), e315 (Extended family), e320 (Friends), e340 (Personal care providers and personal assistants) / Need help with daily activities

** Not present in the Vertigo Comprehensive Core Set

ICF: International Classification of Functioning, Disability, and Health Framework