1[] Increase ventilation by opening windows, doors, etc.
2[] Stopped or decreased smoking
3[] Moved out of or spend less time in the basement
4[] Modified home -- sealed cracks, installed ventilation system, etc.
8[] Other (Specify) ____
9[] DK

[] Increase ventilation by opening windows, doors, etc.
[] Stopped or decreased smoking
[] Moved out of or spend less time in basement
[] Modified home -- sealed cracks, installed ventilation system, etc.
[] Other (Specify) ____
[] DK