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Table 1 Demographic Data of 1156 Patients Undergoing Meningioma Resection

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

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) 0.002a
Gender No. (%)
 Female 34 (67)    782 (71) 0.530b
 Male 17 (33)    323 (29)
Recurrent
 Yes 8 (16)    41 (4) < 0.001b
 No 43 (84)    1064 (96)
Tumor localizations
 Skull base 27 (53)    394 (36) 0.003b
 Non-skull base c 24 (47)    711 (64)
Grade
 I 41 (80)    906 (82) 0.772b
 II/III 10 (20)    199 (18)
Preoperative Steroids
 Yes 8 (16)    96 (9) 0.125b
 No 43 (84)    1009 (91)
Preoperative Chest X-ray
 Normal 28 (55)    767 (69) 0.029b
 Abnormal 23 (45)    338 (31)
Smoking
 Yes 10 (20)    132 (12) 0.103b
 No 41 (80)    973 (88)
DM
 Yes 4 (8)    36 (3) 0.095b
 No 47 (92)    1069 (97)
CVD
 Yes 13 (25)    111 (10) < 0.001b
 No 38 (75)    994 (90)
Blood transfusion
 Yes 10 (20)    80 (7) 0.004b
 No 41 (80)    1025 (93)
Size (cm)
  < 3 cm 3 (6)    167 (15) 0.006b
 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) < 0.001a
  1. Non-normally distributed numerical variables are represented as median and Interquartile range (IQR)
  2. aWilcoxon–Mann–Whitney test. bFisher’s exact test
  3. cConvexity, falx/parasagittal, cerebellar convexity and intra-ventricular
  4. 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