Stove features and behaviors

Before (n = 413)

After (n = 413)

p-value^b

Stoves without chimneys

6.1

0

－

Short chimney (exit of chimney lower than eave)^a

71.7

0

－

Stoves without smoke doors

87.7

0

－

Portable open fire used for heating tea

35.6

33.7

0.01

Fans installed in kitchen

1.0

5.6

<0.01

Never open window in winter

16.0

11.1

0.048