TABLE 1.

Baseline characteristics of children with Mycoplasma pneumoniae pneumonia

Characteristics	MRMP n = 356 (100)	MSMP n = 98 (100)	P	MRMP * n = 285 (100)	MSMP * n = 72 (100)	P	P a	P b
Sex (male/female)	163/193	58/40	0.019	144/141	23/49	0.005	0.234	<0.001
Mean age (years)	7.34 ± 3.47	5.28 ± 4.35	<0.001	7.47 ± 3.30	5.17 ± 4.35	<0.001	0.624	0.887
Age (years)			<0.001			<0.001	0.722	0.888
≤2	28 (7.9)	34 (34.7)		16 (5.6)	27 (37.5)
3–5	83 (23.3)	22 (22.4)		67 (23.5)	13 (18.1)
6–11	204 (57.3)	33 (33.7)		170 (59.6)	24 (33.3)
≥12	41 (11.5)	9 (9.2)		32 (11.2)	8 (11.1)
Total febrile day before admission (day)	5.43 ± 3.02	3.54 ± 2.90	<0.001	5.83 ± 2.83	3.78 ± 2.76	<0.001	0.098	0.495
Daily center/kindergarten, n (%)				283 (99.3)	57 (79.2)	<0.001
Sibling, n (%)				274 (96.1)	49 (68.1)	<0.001
Segmental or lobar pneumonia	256 (72.0)	45 (45.9)	<0.001	251 (88.1)	42 (58.3)	<0.001	<0.001	0.110
Antibiotics medication
Initial antibiotics, n (%)	335 (94.1)	91 (92.9)	0.650	284 (99.6)	70 (97.2)	0.007	<0.001	0.183
Prescribed antibiotics, n (%)
Macrolide
Macrolide alone	102 (28.7)	27 (27.6)	0.831	85 (29.8)	20 (27.8)	0.427	<0.001	0.554
Macrolide + cephalosporin	61 (17.1)	24 (24.5)	0.098	58 (20.4)	2 (2.8)	<0.001	0.298	<0.001
Macrolide + β‐lactams	55 (15.4)	7 (7.1)	0.034	28 (9.8)	24 (33.3)	<0.001	0.003	<0.001
Tetracycline or quinolone	72 (20.2)	11 (11.2)	0.041	65 (22.8)	11 (15.3)	0.107	0.439	0.492

Note: Values are presented as numbers (%) and mean ± standard deviation. Numbers in bold indicate significant differences (P < 0.05). Scale variables were analyzed using the chi‐squared test or Fisher exact test, and continuous variables were analyzed using Student's t‐test or Mann–Whitney U‐test.

Abbreviations: MRMP, macrolide‐resistant M. pneumoniae; MRMP*, macrolide‐resistant M. pneumoniae with admission; MSMP, macrolide‐susceptible M. pneumoniae; MSMP*, macrolide‐susceptible M. pneumoniae with admission; NA, not evaluated.

^a Compared with MRMP and MRMP*.

^b Compared with MSMP and MSMP*.