Univariate analysis of DNA quantity of plyNCR PCR products as a surrogate for pneumococcal colonization density in the nasopharynx.

aNo information was available about age for 7 patients.bPCV7 = seven-valent conjugated pneumococcal vaccine.cThis associations became statistically significant after adjustment for carriage of a serotype contained in PCV7 in a logistic regression model (p = 0.02).dCarriage of a serotype contained in the seven-valent conjugated pneumococcal vaccine; i.e. one of the following serotypes: 4, 6B, 9V, 14, 18C, 19F.No information about vaccination status was available for 100 patients (8.9%). P-values compare the carriage of single or multiple strains of S. pneumoniae to no carriage.