Serious injury determinations require objective import and industry data, proven causation, and exclusion of harm from other factors. Serious injury or threat of serious injury is assessed through objective and quantifiable factors, including increased imports, import market share, domestic sales, production, productivity, capacity utilisation, profits and losses, and employment. Objective evidence must establish a causal link between increased imports and the injury. Harm caused by other factors cannot be attributed to increased imports, and the complaint may be referred for an appropriate anti-dumping or countervailing duty investigation.