Table B1.

Threshold levels for products.

Product	Thres-holds $\tau$	LD-HE model (a)		HD-LE model (b)		HD-HE model (c)
		Coef.	t-Ratio	Coef.	t-Ratio	Coef.	t-Ratio
Grocery	Level 1	−0.037	−0.15	−0.052	−0.22	−0.08	0.38
	Level 2	0.591	2.43	0.578	2.37	2.38	1.09
	Level 3	1.067	4.31	1.055	4.26	4.16	1.06
	Level 4	1.713	6.70	1.703	6.67	6.44	1.05
	Level 5	2.255	8.53	2.247	8.51	8.19	1.04
Meals	Level 1	−0.110	−0.33	−0.136	−0.40	−0.17	0.42
	Level 2	0.513	1.54	0.493	1.45	1.72	1.18
	Level 3	1.213	3.61	1.197	3.51	3.84	1.08
	Level 4	2.133	6.18	2.123	6.08	6.49	1.05
	Level 5	2.983	8.30	2.979	8.21	8.68	1.04
Electronics	Level 1	0.600	2.56	0.594	2.55	2.36	0.94
	Level 2	2.225	8.93	2.211	8.94	8.72	0.98
	Level 3	3.537	13.08	3.518	13.10	12.91	0.99
	Level 4	4.749	15.69	4.727	15.72	15.58	0.99
	Level 5	6.033	16.31	6.011	16.33	16.24	1.00
FBPC	Level 1	−0.247	−1.08	−0.241	−1.04	−1.16	1.13
	Level 2	0.988	4.25	1.001	4.25	4.06	0.97
	Level 3	2.179	9.00	2.197	8.96	8.74	0.99
	Level 4	3.419	13.21	3.443	13.15	12.94	0.99
	Level 5	4.603	16.10	4.632	16.03	15.86	0.99
Recreational Items	Level 1	1.016	3.10	1.031	3.11	2.91	0.92
	Level 2	2.393	7.01	2.419	6.98	6.83	0.96
	Level 3	3.506	9.77	3.538	9.72	9.62	0.96
	Level 4	4.980	12.79	5.018	12.70	12.71	0.97
	Level 5	6.157	14.49	6.197	14.38	14.47	0.97
Household Office	Level 1	−0.005	−0.02	−0.010	−0.03	−0.11	3.68
	Level 2	1.335	4.38	1.320	4.37	4.18	1.00
	Level 3	2.693	8.39	2.669	8.39	8.11	1.01
	Level 4	4.097	11.88	4.068	11.89	11.57	1.01
	Level 5	5.386	14.29	5.352	14.31	14.00	1.01
Medicine Health	Level 1	0.507	2.75	0.503	2.73	2.64	1.00
	Level 2	1.429	7.45	1.424	7.42	7.25	1.00
	Level 3	2.309	11.39	2.302	11.35	11.14	1.00
	Level 4	3.275	14.83	3.267	14.77	14.57	1.01
	Level 5	4.165	16.83	4.157	16.77	16.60	1.00