Table 3.

Association between dietary nicotinic acid intake (two-day average) and hangover symptom severity.

	Original Sample		Bootstrapping Results
Hangover Symptoms	rP	p-Value	Bias	SE	rPB	Lower CIB Limit	Upper CIB Limit
Concentration problems	−0.163	0.612	0.049	0.329	−0.212	−0.940	+0.948
Sleepiness	−0.248	0.437	−0.022	0.386	−0.226	−0.985	+0.885
Being tired	−0.448	0.145	0.043	0.348	−0.531	−1.000	+0.998
Thirst	−0.157	0.625	−0.013	0.255	−0.144	−0.897	+0.634
Nausea	−0.447	0.145	0.103	0.347	−0.550	−1.000	+1.000
Clumsiness	−0.272	0.392	0.029	0.302	−0.301	−0.975	+0.942
Reduced appetite	−0.181	0.573	0.080	0.360	−0.261	−1.000	+0.998
Headache	−0.561	0.058	0.049	0.234	−0.610	−0.987	+0.911
Weakness	−0.141	0.662	0.028	0.348	−0.169	−0.998	+1.000
Dizziness	−0.281	0.376	0.062	0.334	−0.343	−0.940	+0.792
Apathy	−0.303	0.339	0.120	0.419	−0.423	−0.987	+0.994
Stomach pain	−0.363	0.246	0.027	0.299	−0.390	−0.973	+0.813
Sensitivity to light	−0.352	0.262	0.082	0.345	−0.434	−0.985	+0.919
Sensitivity to sound	−0.406	0.190	0.064	0.349	−0.470	−1.000	+0.865
Shaking, shivering	−0.430	0.163	0.018	0.248	−0.448	−0.999	+0.940
Confusion	−0.204	0.524	0.047	0.334	−0.251	−0.999	+0.987
Depression	−0.335	0.287	0.061	0.354	−0.396	−0.982	+0.961
Regret	−0.324	0.304	0.078	0.365	−0.402	−0.994	+0.998
Heart pounding	−0.514	0.087	0.054	0.282	−0.568	−1.000	+0.997
Sweating	−0.347	0.268	0.071	0.366	−0.418	−0.994	+0.973
Vomiting	−0.506	0.093	0.016	0.235	−0.522	−0.999	+0.985
Heart racing	−0.439	0.154	0.066	0.325	−0.505	−1.000	+0.980
Anxiety	−0.379	0.224	0.059	0.346	−0.438	−0.977	+0.842

Reported r and p-value are from the original r_P, controlling for eBAC. Bootstrapping was conducted with B = 10.000 samples. A 99.8% CI_B (corresponding to p < 0.002) was used to correct for multiple comparisons. None of the correlations are significant, as their BCa 99.8% CI_B contains zero. Abbreviations: r_P = partial correlation, eBAC = estimated blood alcohol concentration, SE = standard error, BCa = bias-corrected and accelerated, CI_B = bootstrapped confidence interval.