Table 1.

Examples of SBS and IEQ questions

SBS questions (translated from Chinese) •Do you have eye discomfort (e.g. tearing) while you stay at home? •Do you have nose discomfort (e.g. running nose, sneezing) while you stay at home? •Do you have throat discomfort (e.g. coughing, sore throat) while you stay at home? •Do you have head discomfort (e.g. headache, dizzy) while you stay at home? •Do you have skin discomfort (e.g. allergy, feeling dry) while you stay at home? •Do you feel fatigued while you stay at home?

IEQ questions (translated from Chinese) •Are you disturbed by noise from inside the building (e.g. neighbors or drainage pipes) while you stay at home? •Are you disturbed by noise from outside the building (e.g. traffic) while you stay at home? •Do you have enough sunlight in your flat? •How do you feel about the air ventilation in your flat? •Overall, are you satisfied with your living environment?