Definition
LIGHTQUALITY reports the quality or amount of light inside the dwelling, as good, moderate, or bad, based on the observation and judgment of the interviewer. LIGHTQUALITY presumably relates to both natural light and artificial light (from lamps or firelight), because the complementary variable SUNQUALITY reports just the amount of sunlight in the dwelling.
The information in LIGHTQUALITY is taken from the household record and applies to regular household residents, not temporary visitors. Researchers may wish to exclude visitors using the RESIDENT variable (with visitors coded "2") when women, children, or births are the unit of analysis, and using the HHRESIDENT variable when household members are the unit of analysis.