Table 2.

Number of childhood friends and internalizing and externalizing symptoms in young adulthood: bivariate regression analyses (TEMPO study, 22–35 years in 2009)

Descriptive Characteristics	Young Adult Internalizing Symptoms (N=1067) OR (95%CI)	p-value	Young Adult Externalizing Symptoms (N=1090) OR (95%CI)	p-value
Age (years)	1.00 (0.95–1.05)	0.88	1.01 (0.96–1.05)	0.77
Sex
Female	0.96 (0.68–1.35)	0.80	0.93 (0.65–1.33)	0.69
Male	1.00		1.00
Number of childhood friends
Zero	3.85 (1.90–7.85)	<0.01	2.46 (1.18–5.11)	0.02
1	1.24 (0.65–2.38)	0.50	1.15 (0.61–2.15)	0.66
2 or 3	1.38 (0.84–2.29)	0.21	1.03 (0.63–1.69)	0.90
4 or more	1.00		1.00
Number of childhood friends
Zero	2.99 (1.68–5.32)	<0.01	2.36 (1.28–4.36)	0.01
1 or more	1.00		1.00
Childhood learning difficulties
Yes	0.98 (.68–1.42)	0.94	1.13 (0.77–1.65)	0.53
No	1.00		1.00
Childhood internalizing symptoms
Yes	1.67 (1.09–2.55)	0.02	1.72 (1.11–2.67)	0.02
No	1.00		1.00
Childhood externalizing symptoms
Yes	1.40 (0.87–2.27)	0.17	1.93 (1.21- 3.08)	0.01
No	1.00		1.00
Household income
Low	0.77 (0.53–1.12)	0.17	0.87 (0.60–1.27)	0.47
High/intermediate	1.00		1.00
Parental divorce/separation
Yes	0.94 (0.58–1.57)	0.82	1.03 (0.63–1.71)	0.98
No	1.00		1.00
Parental history of depression
Yes, at least twice	1.86 ( 1.31–2.64)	<0.01	1.88 (1.31–2.70)	0.01
Never or once	1.00		1.00
Parental heavy alcohol drinking
Yes	0.70 (0.45–1.07)	0.10	1.17 (0.78–1.75)	0.44
No	1.00		1.00

Abbreviations: CI, Confidence interval; OR, Odds Ratio