showed a trendp = .052
On multiple regression, baseline anti-S titers were significantly higher among those with prior COVID-19 infection ( p < .0001), whereas current smokers showed a trend toward lower titers (p = .052) (Supplementary Table 2).
On multiple regression, baseline anti-S titers were significantly higher among those with prior COVID-19 infection ( p < .0001), whereas current smokers showed a trend toward lower titers (p = .052) (Supplementary Table 2).