Table 2.

Possible factors influencing recall of mobile telephone use

Predictors		Call number		Call duration
	N	ρ*	P value‡	ρ*	P value ‡
Overall	59	0.3	0.04	0.1	0.37
Gender
Females	36	0.3	0.08	0.1	0.64
Males	23	0.2	0.50	0.2	0.37
Age
<13	30	0.2	0.30	0.02	0.90
≥ 13	29	0.3	0.07	0.1	0.56
Parental risk perception
No risk	4	0.3	0.68	-0.8	0.20
Low risk	12	0.3	0.40	0.6	0.02
Moderate/high risk	7	0.3	0.48	-0.1	0.80
Don't know	36	0.3	0.12	0.1	0.50
Language other than English spoken at home
No	44	0.2	0.10	0.3	0.06
Yes	15	0.3	0.24	-0.4	0.13
School system
Catholic	10	0.5	0.20	0.1	0.74
Independent	13	0.3	0.37	0.1	0.64
Government	36	0.2	0.29	0.1	0.60
Socioeconomic status
Most disadvantaged	6	0.4	0.47	-0.4	0.47
2nd quintile	2	1		0.7	0.01
3rd quintile	12	0.2	0.80	0.2	0.48
4th quintile	16	0.6	0.01	0.3	0.70
Most advantaged	23	0.05	0.80	-0.03	0.90

*Spearman's correlation coefficient

‡ P value – self reports and logged results are independent