Table 3. Multistep logistic regression.

				95%CI for Exp(B)
Variables in the equation	B	p-value	Exp(B)	Lower bound	Upper bound
Step 1
AQ-test total score	0.198	0.027	1.219	1.023	1.454
HCL-32 total score	0.366	0.016	1.442	1.071	1.940
YMRS
Item 2	1.637	0.095	5.137	0.754	35.002
Item 5	0.267	0.780	1.306	0.201	8.497
Item 7	-1.779	0.153	0.169	0.015	1.937
Item 9	-0.743	0.595	0.476	0.031	7.386
BABS total score	-0.119	0.189	0.888	0.744	1.060
Constant	-5.584	0.004	0.004
Step 2
AQ-test total score	0.202	0.023	1.224	1.028	1.456
HCL-32 total score	0.377	0.012	1.458	1.086	1.956
YMRS
Item 2	1.705	0.071	5.503	0.865	35.008
Item 7	-1.754	0.156	0.173	0.015	1.958
Item 9	-0.850	0.529	0.427	0.030	6.045
BABS total score	-0.117	0.192	0.889	0.745	1.061
Constant	-5.557	0.004	0.004
Step 3
AQ-test total score	0.207	0.019	1.230	1.035	1.461
HCL-32 total score	0.330	0.007	1.392	1.094	1.770
YMRS
Item 2	1.748	0.064	5.745	0.905	36.487
Item 7	-1.682	0.171	0.186	0.017	2.071
BABS total score	-0.123	0.173	0.885	0.741	1.055
Constant	-5.543	0.004	0.004
Step 4
AQ-test total score	0.166	0.041	1.180	1.007	1.383
HCL-32 total score	0.294	0.009	1.342	1.077	1.673
YMRS
Item 2	1.656	0.075	5.238	0.845	32.478
Item 7	-1.441	0.235	0.237	0.022	2.551
Constant	-5.375	0.004	0.005
Step 5
AQ-test total score	0.172	0.031	1.188	1.016	1.390
HCL-32 total score	0.287	0.011	1.332	1.067	1.663
YMRS item 2	1.242	0.128	3.463	0.698	17.177
Constant	-5.558	0.003	0.004
Step 6
AQ-test total score	0.165	0.039	1.179	1.008	1.380
HCL-32 total score	0.347	0.001	1.415	1.146	1.748
Constant	-5.228	0.004	0.005

Step 6 provided the best fit, correctly classifying up to 78.1% of AN⁺ cases.

The HCL-32-R2 scores refer to 56/60 unipolar depression patients.

95%CI = 95% confidence interval; AN = anorexia nervosa; AQ-test = Autism-Spectrum Quotient-test; BABS = Brown Assessment of Beliefs Scale; HCL-32 = Hypomania Checklist-32-item, second revision, 34-item version; YMRS = Young Mania Rating Scale.