Table 2. Mixed Model Results for Each Symptom.

	Pain		Bloating		Diarrhea		Constipation		Average score
	beta	P	beta	P	beta	P	beta	P	beta	P
JHS # time
No # post low FODMAP diet	-0.94	< 0.0001	-1.23	< 0.0001	-0.84	< 0.0001	0.81	< 0.0001	-0.55	< 0.0001
Yes # pre low FODMAP diet	0.70	0.028	0.48	0.128	-0.48	0.151	-0.17	0.597	0.14	0.467
Yes # post low FODMAP diet	-0.77	0.064	-1.07	0.009	-1.3	0.003	0.60	0.154	-0.63	0.009
IBS type # time
IBS-D # post low FODMAP diet	0.22	0.225	0.41	0.057	-0.37	0.102	-0.65	0.003	-0.10	0.449
IBS-C # pre low FODMAP diet	0.06	0.064	0.27	0.327	-2.03	< 0.0001	1.96	< 0.0001	0.06	0.686
IBS-C # post low FODMAP diet	0.05	0.049	0.33	0.221	-0.99	< 0.0001	-0.02	0.943	-0.16	0.319
IBS-M # pre low FODMAP diet	-0.07	-0.073	-0.04	0.835	0.18	0.416	0.98	< 0.0001	0.26	0.037
IBS-M # post low FODMAP diet	0	omitted	0	omitted	0	omitted	0	omitted	0	omitted
JHS #IBS Type # time
Yes # IBS-C # pre low FODMAP diet	0.06	0.912	-0.17	0.735	0.46	0.388	0.83	0.109	0.29	0.326
Yes # IBS-C # post low FODMAP diet	0.74	0.153	0.29	0.571	0.34	0.529	1.10	0.033	0.30	0.030
Yes # IBS-M # pre low FODMAP diet	-0.97	0.067	-0.75	0.152	0.91	0.097	1.58	0.003	0.19	0.535
Yes # IBS-M # post low FODMAP diet	-0.92	0.085	-0.65	0.213	-0.34	0.540	1.07	0.044	-0.21	0.498
Constant	3.31	< 0.0001	3.63	< 0.0001	1.81	< 0.0001	0.20	0.200	2.32	< 0.0001
F test	< 0.0001		< 0.0001		< 0.0001		< 0.0001		< 0.0001