Factors

Group A (EVD less than 7 days)

Mean = 5.44 ± 1.78 days

Group B (EVD more than 7 days) Mean = 13.72 ± 5.81

Overall

Mean = 10.23 ± 6.14

P-value

Number of Patients (n)

16

22

38

Age (In Months)

Mean ± SD

54.19 ± 24.52

66.73 ± 33.57

61.45 ± 30.37

0.21

Sex

Male, n (%)

10 (62.50%)

12 (54.55%)

22 (57.89%)

0.62

Female, n (%)

6 (37.50%)

10 (45.45%)

16 (42.11%)

Duration of Symptoms

Less than 1 month, n (%)

10 (62.50%)

14 (63.64%)

24 (63.16%)

0.94

More than 1 month, n (%)

6 (37.50%)

8 (36.36%)

14 (36.84%)

Clinical Features

Signs of raised ICP only, n (%)

13 (81.25%)

17 (77.27%)

30 (78.95%)

0.81

Signs of raised ICP with cranial nerve deficits, n (%)

2 (12.50%)

2 (9.09%)

4 (10.53%)

Signs of raised ICP with head enlargement or delayed milestones, n (%)

1 (6.25%)

2 (9.09%)

3 (7.89%)

Signs of raised ICP with loss of consciousness, n (%)

0 (0.00%)

1 (4.55%)

1 (2.63%)

Duration of MRI (In Days)

Mean ± SD

3.25 ± 1.69

4.41 ± 1.79

3.92 ± 1.82

0.04

Location of the Tumour

Midline, n (%)

13 (81.25%)

18 (81.82%)

31 (81.58%)

0.96

Lateral, n (%)

3 (18.75%)

4 (18.18%)

7 (18.42%)

CSF Seeding

No, n (%)

11 (68.75%)

18 (81.82%)

29 (76.32%)

0.80

Yes, n (%)

5 (31.25%)

4 (18.18%)

9 (23.68%)

Diagnosis

Medulloblastoma, n (%)

8 (50.00%)

14 (63.64%)

22 (57.89%)

0.65

Pilocytic astrocytoma, n (%)

3 (18.75%)

5 (22.73%)

8 (21.05%)

Anaplastic ependymoma, n (%)

3 (18.75%)

2 (9.09%)

5 (13.16%)

Ewing’s sarcoma, n (%)

1 (6.25%)

0 (0.00%)

1 (2.63%)

Cavernous haemangioma, n (%)

1 (6.25%)

1 (4.55%)

2 (5.26%)

Surgery

Gross total, n (%)

13 (81.25%)

18 (81.82%)

31 (81.58%)

0.96

Subtotal, n (%)

3 (18.75%)

4 (18.18%)

7 (18.42%)

CSF Leak

No, n (%)

13 (81.25%)

20 (90.91%)

33 (86.84%)

0.63