Level Relative risk (RR) of VS-LRTI† [95% CI]‡ p-value Significance
Sex Female Ref 0.75 -
Male 0.89 [0.34; 1.45]
Type of pregnancy Singleton Ref 0.99 -
Multiple 0.14 [-1.42; 1.40]
Mode of delivery Vaginal Ref 0.79 -
Caesarean 0.88 [0.14; 1.62]
Parity Monoparity Ref < 0.01 **
Multiparity 2.34 [1.58; 3.01]
Date of birth in relation to the peak of the epidemic Birth after the peak Ref < 0.001 ***
Birth before the peak 2.84 [2.08; 3.59]
Titer of antibodies Slope -0.00049 [-0.00167; 0.000692] 0.50 -