Table 2.

Odds ratio of K. pneumoniae at time of LRTI and at two-weekly intervals preceding LRTI in cases vs controls

	Time of LRTI	1–14 days prior to LRTI	15–28 days prior to LRTI	29–56 days prior to LRTI	>57 days prior to LRTI	Overall
	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)
Case vs Control	1.93 (1.25–3.03)	1.09 (0.62–1.94)	1.48 (0.87–2.52)	1.01 (0.70–1.45)	1.30 (0.89–1.90)	1.30 (1.07–1.56)

LRTI = lower respiratory tract infection