Table 5.

Exploratory analyses of prevalence of recurrent PB and RB by age groups in 10-year brackets (N = 2403)

Age group	Recurrent PB				Recurrent RB
	95% CI				95% CI
	n	%	LL	UL	n	%	LL	UL
18–29 years (n = 389)	2	0.51	0.00	1.34	2	0.51	0.00	1.42
30–39 years (n = 394)	5	1.27	0.25	2.54	2	0.51	0.00	1.30
40–49 years (n = 394)	4	1.02	0.24	2.14	5	1.27	0.26	2.49
50–59 years (n = 490)	8	1.63	0.61	3.01	5	1.02	0.21	2.05
⩾60 years (n = 736)	7	0.95	0.29	1.74	3	0.41	0.00	0.94

Note: PB, pica behaviour; RB, rumination behaviour; CI, confidence interval; LL, lower limit; UL, upper limit.