Table 1. Logistic regression slope, standard error, Wald test with statistical significance, Odds Ratio and 95% Confidence Interval of the probability for a paper to report a positive result, depending on the following study characteristics: discipline of the journal in which the paper was published, papers testing more than one hypothesis (only the first of which was included in the study).

Variable	B	SE	Wald	df	Sig.	OR	95%CI OR
Discipline (all)			61.238	19	<0.001
Geosciences	0.198	0.295	0.453	1	0.501	1.219	0.684–2.174
Environment/ Ecology	0.353	0.289	1.490		0.222	1.423	0.808–2.508
Plant and Animal Sciences	0.472	0.277	2.900	1	0.089	1.604	0.931–2.761
Computer Science	0.711	0.390	3.329	1	0.068	2.036	0.949–4.372
Agricultural  Sciences	0.826	0.337	6.014	1	0.014	2.284	1.180–4.420
Physics	0.856	0.392	4.766	1	0.029	2.354	1.091–5.078
Neuroscience & Behaviour	0.872	0.316	7.616	1	0.006	2.393	1.288–4.446
Microbiology	0.903	0.320	7.973	1	0.005	2.467	1.318–4.616
Chemistry	0.911	0.360	6.391	1	0.011	2.487	1.227–5.041
Social Sciences, General	1.006	0.321	9.808	1	0.002	2.735	1.457–5.134
Immunology	0.984	0.323	9.311	1	0.002	2.676	1.422–5.035
Engineering	1.076	0.402	7.175	1	0.007	2.934	1.335–6.448
Mol. Biology & Genetics	1.081	0.343	9.930	1	0.002	2.947	1.505–5.772
Economics &  Business	1.624	0.385	17.780	1	<0.001	5.073	2.385–10.792
Biology &  Biochemistry	1.216	0.365	11.084	1	0.001	3.372	1.649–6.897
Clinical Medicine	1.286	0.355	13.090	1	<0.001	3.618	1.803–7.262
Pharm. & Toxicology	1.297	0.347	13.936	1	<0.001	3.658	1.851–7.226
Materials Science	1.395	0.396	12.433	1	<0.001	4.034	1.858–8.760
Psychiatry/Psychology	1.569	0.372	18.427	1	<0.001	4.935	2.381–10.230
Multiple hypotheses	−0.877	0.221	15.756	1	<0.001	0.416	0.27–0.642
Constant	0.856	0.214	15.962	1	<0.001	2.355

The effect of discipline was tested for overall effect then each discipline was contrasted to Space Science by indicator contrast.