Table 1.

Exacerbation questions from the BOLD Core Questionnaire

19. Have you ever had a period when you had breathing problems that got so bad that they interfered with your usual daily activities or caused you to miss work? (If yes, ask Question 19a. If no, skip 19a, 19b,19c,19d)	o Yes 1 o No 2
19.a How many such episodes have you had in the past 12 months? (If 19a>0, ask Question 19b, 19c, else skip 19b, 19c, 19d)	__Episodes
19.b For how many of these episodes did you need to see a doctor or other healthcare provider in the past 12 months?	__Episodes
19.c For how many of these episodes were you hospitalised overnight in the past 12 months (If 19c>0, ask Question 19d, else skip 19d)	__Episodes
19.d All together, for how many total days were you hospitalised overnight for breathing problems in the past 12 months?	__Episodes

BOLD, Burden of Obstructive Lung Disease.