Table 1.

Subgroup Analysis According to Type of Lower Respiratory Tract Infection.^*

Subgroup	90-Day Mortality			1-Year Mortality
	Procalcitonin	Usual Care	Difference (95% CI)	Procalcitonin	Usual Care	Difference (95% CI)
	no./total no. (%)		percentage points	no./total no. (%)		percentage points
CAP	10/167 (6.0)	8/161 (5.0)	1.0 (−51.2 to 53.2)	18/167 (10.8)	21/161 (13.0)	−2.3 (−64.6 to 60.0)
COPD	13/265 (4.9)	5/259 (1.9)	3.0 (−38.0 to 43.9)	25/265 (9.4)	26/259 (10.0)	−0.6 (−53.7 to 52.4)
Asthma	2/310 (0.6)	2/336 (0.6)	0.0 (−25.9 to 26.0)	8/310 (2.6)	9/336 (2.7)	−0.1 (−37.1 to 36.9)
Acute bronchitis	3/208 (1.4)	1/190 (0.5)	0.9 (−31.3 to 33.1)	3/208 (1.4)	5/190 (2.6)	−1.2 (−40.3 to 37.9)

^*Percentages are Kaplan–Meier estimates. A patient could have more than one final diagnosis. Data are from National Death Index query results received in December 2018. CAP denotes community-acquired pneumonia, and COPD chronic obstructive pulmonary disease.