. 2016 May 25;7:727. doi: 10.3389/fpsyg.2016.00727

Table 3.

Relative contribution of structural conditions to social support and behavioral factors in adulthood.

	Shapley decomposition (% explained)
	Instrumental support	Emotional support	Alcohol use	Smoking
Explanatory variables	%	%	%	%
Gender	0.17	35.73^d	41.18^d	9.75^d
Age	22.82^d	8.26^d	53.19^d	1.76^b
Mother's education	1.49	0.30	0.72^d	27.01^d
Father's education	1.24^d	0.86^c	0.48	32.52^d
Childhood financial conditions	40.50^d	29.26^d	0.83^b	7.83^b
Psychological abuse	20.04^d	14.06^d	0.30	1.98^b
Physical abuse	8.72^a	8.35^a	0.90^b	15.90^d
Substance abuse distress	5.01^c	3.17	2.39^d	3.26^a

P < 0.1.

P < 0.05.

P < 0.01.

P < 0.001.

Instrumental support: Do you have enough friends who can give you help and support when you need it? (yes, no).

Emotional support: Do you have enough friends you can talk confidentially with? (yes, no).

Alcohol use: How many units of alcohol (a beer, a glass of wine or a drink) do you usually drink when you drink alcohol? (1–4, 5–6, 7–9, 10 or more).

Smoking: Do you/did you smoke daily? [yes, now; yes, previously; never (ref)].