Probably not enough information. For example, exposure to diesel emissions is closely correlated with childhood asthma, and this may or may not be an issue on different farms (tractors not being very clean-running typically). Some farmland is in very dusty regions as well. Hence, growing up on a farm might or might not be as bad as growing up right next to a major freeway or oil refinery:
> "In a study funded in part by EPA, researchers from Johns Hopkins University found that children exposed to outdoor coarse particulate matter (PM10-2.5), were more likely to develop asthma and need emergency room or hospital treatment for it. Coarse PM can come from roadway particles such as brake and tire wear, and mixtures of road dust and metals."
> "In a study funded in part by EPA, researchers from Johns Hopkins University found that children exposed to outdoor coarse particulate matter (PM10-2.5), were more likely to develop asthma and need emergency room or hospital treatment for it. Coarse PM can come from roadway particles such as brake and tire wear, and mixtures of road dust and metals."
https://www.epa.gov/sciencematters/links-between-air-polluti...