PRL and amyotrophic lateral sclerosis: In the crude model, elevated INL (per SD increase hazard ratio (HR) [95% CI] = 1.17 [1.06, 1.29]; p = 0.003) and RPE (per SD increase HR [95% CI] = 1.20 [1.07, 1.34]; p = 0.002) were associated with an increased risk of ALS, while elevated PRL (per SD increase HR [95% CI] = 0.82 [0.71, 0.94]; p = 0.004) was associated with a reduced risk.