Table 2.

Ordered logistic regression of ASRS scores and lifestyle variables

Ordered logistic regression
Number of obs =1,012
Question	Odds ratio	SE	Z	P>z	95% CI
Do you adhere to principles of a healthy lifestyle? (regular diet, healthy drinking regime, regular sleep) (Yes 1, Sometimes 2, Rarely 3, No 4, I don’t know what they are 5)	1.21	0.11	2.22	0.027	1.02	1.42
Do you smoke cigarettes? (Yes 1, No 2)	1.47	0.19	2.91	0.004	1.13	1.92
Use of illegal substances – marijuana (Yes, I use them regularly 1, I used them regularly in the past 2, I tried them 3, No 4)	0.59	0.06	−4.91	0.000	0.48	0.73
Use of illegal substances – volatile substances (Yes, I use them regularly 1, I used them regularly in the past 2, I tried them 3, No 4)	0.34	0.14	−2.59	0.010	0.15	0.77
Are you regularly involved in physical activity/sport? (No 1, Yes 2)	1.35	0.17	2.39	0.020	1.05	1.74
During a typical day, how much time do you spend watching TV: hours	0.95	0.02	−2.02	0.044	0.89	0.99
How many main meals do you consume a day? (four main meals daily, two to three main meals daily, one or two main meals daily)	0.84	0.07	−1.91	0.057	0.71	1.00
How many portions of fruits/vegetables do you eat? (more than four portions a day, two to three portions a day, one or none)	1.29	0.15	2.27	0.023	1.03	1.60
How often do you eat sweets? (three times a week or less, four to five times a week, every day)	1.37	0.11	4.11	0.000	1.17	1.59
Are you extremely sleepy or tired during the day? (Yes 1, No 2)	0.46	0.06	−5.90	0.000	0.36	0.59
Do you have trouble with sleep at night? (Yes 1, No 2)	0.73	0.09	−2.46	0.014	0.59	0.97

Abbreviations: ASRS, Adult Attention-Deficit/Hyperactivity Disorder Self-Report Scale; LR, likelihood ratio; obs, observations; SE, standard error.