Table 3.

Reliable change index for primary outcome measure (S-DAI score).

Participant number	Randomization allocation	x1	x2	x2 – x1	sx	rt	SEM	st	SEdiff	RCI	Sig.
708	propranolol	24	33	9	7.535	0.88	2.610	6.2	3.037	2.9631	Sig.
786	propranolol	27	27	0	7.535	0.88	2.610	6.2	3.037	0.0000	N/S
860	propranolol	35	28	−7	7.535	0.88	2.610	6.2	3.037	−2.3046	Sig.
942	propranolol	30	23	−7	7.535	0.88	2.610	6.2	3.037	−2.3046	Sig.
945	propranolol	41	43	2	7.535	0.88	2.610	6.2	3.037	0.6585	N/S
947	propranolol	34	28	−6	7.535	0.88	2.610	6.2	3.037	−1.9754	Sig.
949	propranolol	28	28	0	7.535	0.88	2.610	6.2	3.037	0.0000	N/S
950	propranolol	29	15	−14	7.535	0.88	2.610	6.2	3.037	−4.6093	Sig.
953	propranolol	33	20	−13	7.535	0.88	2.610	6.2	3.037	−4.2800	Sig.
954	propranolol	38	39	1	7.535	0.88	2.610	6.2	3.037	0.3292	N/S
957	propranolol	33	20	−13	7.535	0.88	2.610	6.2	3.037	−4,2800	Sig.
959	propranolol	45	45	0	7.535	0.88	2.610	6.2	3.037	0.0000	N/S
961	propranolol	40	38	−2	7.535	0.88	2.610	6.2	3.037	−0.6585	N/S
965	propranolol	41	41	0	7.535	0.88	2.610	6.2	3.037	0.0000	N/S
970	propranolol	16	18	2	7.535	0.88	2.610	6.2	3.037	0.6585	N/S
972	propranolol	22	27	5	7.535	0.88	2.610	6.2	3.037	1.6462	N/S
975	propranolol	33	26	−7	7.535	0.88	2.610	6.2	3.037	−2.3046	Sig.
979	propranolol	34	32	−2	7.535	0.88	2.610	6.2	3.037	−0.6585	N/S
982	propranolol	27	21	−6	7.535	0.88	2.610	6.2	3.037	−1.9754	Sig.
702	placebo	39	27	−12	7.535	0.88	2.610	6.2	3.037	−3.9508	Sig.
709	placebo	32	23	−9	7.535	0.88	2.610	6.2	3.037	−2.9631	Sig.
859	placebo	42	27	−15	7.535	0.88	2.610	6.2	3.037	−4.9385	Sig.
943	placebo	27	35	8	7.535	0.88	2.610	6.2	3.037	2.6339	Sig.
944	placebo	43	43	0	7.535	0.88	2.610	6.2	3.037	0.0000	N/S
948	placebo	20	26	6	7.535	0.88	2.610	6.2	3.037	1.9754	Sig.
952	placebo	26	17	−9	7.535	0.88	2.610	6.2	3.037	−2.9631	Sig.
955	placebo	29	26	−3	7.535	0.88	2.610	6.2	3.037	−0.9877	N/S
956	placebo	30	30	0	7.535	0.88	2.610	6.2	3.037	0.0000	N/S
958	placebo	22	19	−3	7.535	0.88	2.610	6.2	3.037	−0.9877	N/S
960	placebo	31	25	−6	7.535	0.88	2.610	6.2	3.037	−1.9754	Sig.
964	placebo	38	36	−2	7.535	0.88	2.610	6.2	3.037	−0.6585	N/S
966	placebo	35	29	−6	7.535	0.88	2.610	6.2	3.037	−1.9754	Sig.
968	placebo	19	18	−1	7.535	0.88	2.610	6.2	3.037	−0.3292	N/S
973	placebo	28	25	−3	7.535	0.88	2.610	6.2	3.037	−0.9877	N/S
976	placebo	41	27	−14	7.535	0.88	2.610	6.2	3.037	−4.6093	Sig.
980	placebo	35	28	−7	7.535	0.88	2.610	6.2	3.037	−2.3046	Sig.

N/S, Not statistically significant (-1.96 > RCI < 1.96); RCI, Reliable Change Index = (x1 – x2) / S_diff; r_t, Reliability of the test (Cronbach's α); S-DAI, Short version of the Dental Anxiety Inventory with total test scores ranging from 9 to 45 (Aartman, 1998); SE_diff, Standard Error of measurement of the difference = √ (2 · (SE_M)²); SE_M, Standard Error of the Mean = S_X · √ (1 –r_t); Sig., Statistically significant (R > 1.96 or RCI < −1.96); s_t, Standard deviation of the test; s_X, Standard deviation of test takers' scores = (s_x2 + s_x1) / 2; x1, Baseline score; x2, Follow-up score; x2 – x1, Observed difference in score.