Table 4.

Negative binominal regression analysis with discrete suicide variable.

Suicide scale	IRR	st. err.	z -value	p -value	95% conf. int.
Perfectionism (general)**	0.90	0.025	−3.75	<0.001	0.85–0.95
ADHD (combined)*	1.57	0.28	2.50	0.012	1.10–2.24
Other statistical values
Mean dependent var	0.15	SD dependent var		0.82
Pseudo r-squared	0.18	Number of obs		182
Chi-square	21.1	Prob > chi2		<0.001
Akaike crit. (AIC)	104.5	Bayesian crit.		117.3

ADHD, attention-deficit/hyperactivity disorder; IRR, incidence rate ratio; st.err, standards error; 95 conf.int: confidence interval.