Table 6.

Different incidence of pain on insertion by age (25)

Age category	Number of patients	Pain on insertion of the needle
		Incidence (%)a in each patient (mean with ranges in parentheses)	Number of patients with pain
10–19	8	4.7 (0–22.2)	2 (25%)
20–29	28	2.3 (0–37.5)	4 (14%)
30–39	41	1.1 (0–13.3)	7 (17%)
40–49	74	1.7 (0–26.7)	13 (18%)
50–59	84	2.0 (0–50.0)	15 (18%)
60–69	96	1.4 (0–19.2)	13 (14%)
70–79	49	1.4 (0–13.3)	8 (16%)
80–89	11	0.0 (0–0)	0 (0%)

^aPercentage indicates how frequent the reaction occurred in each patient. For example, in patients aged 10–19 years, pain on insertion was experienced 4.7 times on average per 100 insertions in each patient.