Hi. I'm trying to see if there is a relationship between fire safety input to residents and real data about the number of fires, casualties and the severity of fire. Just thinking about the number of fires, I used a simple regression model. The number of visits per month is the independent variable and the number of fires per month is the dependent variable. I used data from April 2015 to April 2019. The model indicated there was no correlation or relationship between the two. But then I started thinking that the effect of the visit might not be immediate. The household may have a fire, but months or years down the line. Should I just accept that regression isn't the way to look at this or is there something I can do to better use time series data like this. I was hoping to see evidence that our fire safety visits reduce fires and casualties or reduce fire severity. I'm very new to this so don't have a great understanding of which models work for which problem. I'd be grateful for being put on the right path. I've tried googling this but not found the answer.