Table 4. Size distribution of PTCs.

Size (mm)	0–10	11–20	21–30	31–40	41–50	51–60	61–70	71–80	81–90	91–100	>100	No data
Thrissur Medical College	160	168	170	93	53	32	11	4	4	0	2	94
Calicut Medical College	181	236	211	113	54	25	14	11	5	4	4	25
Total	341	404	381	206	107	57	25	15	9	4	6	119
Proportion	20.3	24.1	22.8	12.3	6.4	3.4	1.5	1.0	0.6	0.2	0.4	7.1