Sentence:  The results of these inquiries were <WSD>used</WSD> to adjust compilations of data from the registers and to provide various ratios and rates by districts , including birth and death rates , general fertility rates , distributions by marital status , fertility of wives separately in polygynous and non-polygynous households , infant mortality , and migration . 
Meaning of the word marked with <WSD> tags:  put into service; make work or employ for a particular purpose or for its inherent or natural purpose