Table 4

Proportion of participants misclassified across reported caffeinated cups compared with 227 mL volume-standardised cups a day

Volume-standardised cups a day	Reported cups a day
Volume-standardised cups a day	0	1	2	3	4	5	6	7	8	9	10	Total
0	13.80	0.98	0.06									14.83
1	0.07	38.96	2.24	0.16								41.44
2		1.41	19.64	1.93	0.17							23.14
3			2.36	6.76	0.47	0.21	0.03					9.83
4			0.30	1.27	2.91	0.63						5.11
5			0.01	0.43	0.86	1.32	0.19					2.81
6					0.23	0.66	0.55	0.21		0.03		1.68
7						0.09	0.19	0.14	0.11			0.54
8						0.05		0.01		0.14		0.21
9						0.07		0.02	0.02			0.11
10									0.21		0.02	0.24
≥11										0.09		0.09
≥2 cups over			0.06	0.16	0.17	0.21	0.03			0.03		0.66
1 cup over		0.98	2.24	1.93	0.47	0.63	0.19	0.21	0.11	0.14		6.89
No misclassification	13.80	38.96	19.64	6.76	2.91	1.32	0.55	0.14			0.02	84.10
1 cup under	0.07	1.41	2.36	1.27	0.86	0.66	0.19	0.01	0.02			6.84
≥2 cups under			0.31	0.43	0.23	0.22		0.02	0.21	0.09		1.51
Total	13.87	41.35	24.60	10.55	4.63	3.04	0.96	0.38	0.34	0.26	0.02	100.00
% misclassification*	0.51	5.77	20.17	35.94	37.08	56.60	42.60	63.83	100	100	0.00
Base (unweighted)	237	649	383	177	87	53	18	10	3	5	1	1623