3 Don't know

IF (whether brings up phlegm in the morning in winter = [no, don’t know]) [(HeRpa = [2, 3]

│

│ HERPB

│ Do you usually bring up any phlegm from your chest, during the day or at night in the winter?

│ 1 Yes

│ 2 No

│

END OF FILTER

IF (whether brings up phlegm in the morning in winter = yes) OR (whether brings up phlegm

during the day or at night in winter = yes) [(HeRpa = 1) OR (HeRpb = 1)]

│

│ HERPC

│ Do you bring up phlegm like this on most days for as much as three months each year?

│ 1 Yes

│ 2 No

│

END OF FILTER

HERPD

Are you troubled by shortness of breath when hurrying on level ground or walking up a slight

hill?

1 Yes

2 No

3 Never walks up hill or hurries

4 Cannot walk

IF (whether gets short of breath when hurrying or walking uphill = [yes, never walks uphill])

[(HeRpd = [1, 3])]

│

│ HERPE

│ Do you get short of breath walking with other people of your own age on level ground?

│ 1 Yes

│ 2 No

│ 3 Never walks with people of own age on level ground

│ 4 Cannot walk

│

│ IF short of breath walking on level ground = never walk [HeRpe = NeverDo]

││

││ HeRpe1

││ Do you never walk ^[BLANK / uphill or hurry / on level ground] because... READ OUT...

││ CODE ONE ONLY

││ 1 ...it makes you short of breath to do so,

││ 2 ...it causes other discomfort to do so,

││ 3 ...you prefer not to,

││ 4 or, for some other reason?

││

│ END OF FILTER

│

│If (whether gets short of breath when walking on level ground = [yes, no]) [(HeRpe = [1, 2])]

││

││ HERPF

││ Do you have to stop for breath when walking at your own pace on level ground?

││ 1 Yes