Variable

Study group

Control group

Mean age

48.3 ± 2.3 (35 - 71)

49.1 ± 3.4 (37 - 77)

Size of tumour (mm)

33.1 (8 - 71)

35.2 (13 - 88)

No. of lymph nodes removed

14.8 (8 - 25)

12.6 (10 - 23)

No. positive lymph nodes

8.2 (0 - 16)

7.8 (2 - 14)

Laterality (% Right)

57.1%

59.0%

Hypertension

10/30 (33.3%)

9/30 (30%)

Diabetes mellitus

7/30 (23.3%)

5/30 (16.7%)