Shape of NPC

Total

p value

Cylinderical

Funnel

Hourglass

Spindle

Age group

Group I

62

58

8

6

134

0.987

Group II

25

22

4

3

54

Group III

6

5

1

0

12

Total

93

85

13

9

200

Percentage distribution

46.5%

42.5%

6.5%

4.5%

100%