highly significantp < 0.001
Among these: Variants 5, 6, 7, 9, and 15 showed highly significant associations with disease severity ( p < 0.001).
Among these: Variants 5, 6, 7, 9, and 15 showed highly significant associations with disease severity ( p < 0.001).
Age showed a trend toward significance ( p = 0.078), indicating a possible increase in risk with advancing age, though not reaching conventional significance.
Association between viral lineage and disease severity When WHO variant was modeled as the primary exposure (Delta as the reference), Omicron infection was associated with 1.91 times higher odds of severe disease compared to Delta, although this did not reach statistical significance (95% CI: 0.77–4.77, p = 0.164).