Table 1.

Antibiotics prescribed for CAP by age, visit location, and 4-year time period^a

Antibiotic prescribed	Percentage (95% CI) of antibiotic prescriptions, by age and visit location
	All ages			90 days–4 years			5–18 years
	Office	ED	p value	Office	ED	p value	Office	ED	p value
Amoxicillin	21% (14–30%)	28% (23–35%)	0.19	34% (22–49%)	35% (28–44%)	0.89	—b	14% (10–21%)
Azithromycin	50% (40–60%)	42% (36–49%)	0.20	37% (25–51%)	32% (25–40%)	0.52	61% (49–71%)	62% (52–70%)	0.89
Cephalosporin	20% (14–28%)	37% (31–43%)	0.001	—b	36% (29–43%)		—b	39% (31–49%)

Antibiotic prescribed	Percentage of antibiotic prescriptions, by age and 4-year time period
	All ages			90 days–4 years			5–18 years
	2008–2011	2012–2015	p value	2008–2011	2012–2015	p value	2008–2011	2012–2015	p value
Amoxicillin	20% (13–29%)	28% (21–37%)	0.15	31% (20–45%)	39% (27–52%)	0.38	—b	15% (9–23%)	—b
Azithromycin	47% (37–57%)	48% (39–57%)	0.91	33% (23–45%)	37% (26–49%)	0.66	60% (47–72%)	62% (51–72%)	0.85
Cephalosporin	25% (19–33%)	26% (19–35%)	0.84	30% (21–40%)	28% (18–40%)	0.78	21% (13–33%)	25% (17–36%)	0.58

^aIncludes co-prescribing at some visits. Antibiotics included penicillins, cephalosporins, macrolides (azithromycin), lincomycin derivatives (clindamycin), tetracyclines, sulfonamides, quinolones, or linezolid

^b— Indicates that the estimate for p value is not reliable, as it is either based on < 30 raw observations or has a relative standard error of > 30%