Demographic data
A total of 44 patients were included in the study. There were 36 male
patients and 8 female patients with a ratio of 5:1 (Figure 1). The mean
age of males with IPs was 60 (range,18 to 72 years) and the mean age for
females was 56 (range, 41 to 68). There were 27 (61.4%) Malay patients,
10 (22.7%) Chinese patients, 5 (11.4%) Indian patients and the
remaining 2 (4.5%) patients were of other races (Figure 2).