A comprehensive study of risk factors for post-operative pneumonia following resection of meningioma

BMC Cancer

Table 1 Demographic Data of 1156 Patients Undergoing Meningioma Resection

Variables	Pneumonia		No pneumonia
	(n = 51)		(n = 1105)
	Median(IQR)	Range	Range	Median(IQR)	P Value
Age at diagnosis, years	58 (49~66)	24–81	18–85	51 (43~61)	0.002^a
Gender No. (%)
Female	34 (67)			782 (71)	0.530^b
Male	17 (33)			323 (29)	0.530^b
Recurrent
Yes	8 (16)			41 (4)	< 0.001^b
No	43 (84)			1064 (96)	< 0.001^b
Tumor localizations
Skull base	27 (53)			394 (36)	0.003^b
Non-skull base ^c	24 (47)			711 (64)	0.003^b
Grade
I	41 (80)			906 (82)	0.772^b
II/III	10 (20)			199 (18)	0.772^b
Preoperative Steroids
Yes	8 (16)			96 (9)	0.125^b
No	43 (84)			1009 (91)	0.125^b
Preoperative Chest X-ray
Normal	28 (55)			767 (69)	0.029^b
Abnormal	23 (45)			338 (31)	0.029^b
Smoking
Yes	10 (20)			132 (12)	0.103^b
No	41 (80)			973 (88)	0.103^b
DM
Yes	4 (8)			36 (3)	0.095^b
No	47 (92)			1069 (97)	0.095^b
CVD
Yes	13 (25)			111 (10)	< 0.001^b
No	38 (75)			994 (90)	< 0.001^b
Blood transfusion
Yes	10 (20)			80 (7)	0.004^b
No	41 (80)			1025 (93)	0.004^b
Size (cm)
< 3 cm	3 (6)			167 (15)	0.006^b
3 cm–5 cm	14 (27)			439 (40)
≥ 5 cm	34 (67)			483 (44)
Postoperative hospital stay, days	21 (17~29)	7–229	2~20	7 (6~9)	< 0.001^a

Non-normally distributed numerical variables are represented as median and Interquartile range (IQR)
^aWilcoxon–Mann–Whitney test. ^bFisher’s exact test
^cConvexity, falx/parasagittal, cerebellar convexity and intra-ventricular
Skull base: Cerebellopontine angle, foramen magnum, middle fossa, olfactory groove/planum shenoidale, orbital/ anterior clinoid, parasellar/cavernous sinus, petroclival, sphenoid wing, tentorium and tuberculum sellae

ISSN: 1471-2407