Table 2.

Sociodemographic information of the SIP sample by group (continuous variables).

Characteristic	Intervention			Control
	n	Mean	SE	n	Mean	SE	F*	P*
Child age (at baseline)	161	4.50	0.07	161	4.53	0.06	0.096	0.757
SOCIOECONOMIC INFORMATIONa
Parent education levelb	169	6.08c	0.21	167	6.04c	0.19	0.002	0.961
Parent occupation backgroundb	169	2.92d	0.17	170	2.89d	0.17	0.003	0.955
Housinge	166	8.64	0.14	167	8.95	0.14	2.288	0.131
Overcrowding conditionsf	168	5.65	0.18	169	6.07	0.16	3.591	0.059
LIFE STRESSORS AND SOCIAL RESOURCESg
Physical health	125	−49.38	0.88	129	−50.22	0.84	0.479	0.489
Housing stressors	127	−60.14	1.13	131	−58.79	1.12	0.728	0.394
Economic stressors	127	−65.71	0.63	131	−64.17	0.76	2.442	0.119
Working stressors	68	−48.40	0.79	69	−50.06	1.04	1.606	0.207
Couple stressors	103	−55.77	0.90	108	−56.35	0.84	0.227	0.634
Child stressors	125	−67.89	0.92	131	−66.96	0.85	0.548	0.460
Family stressors	112	−46.99	0.84	116	−47.68	1.00	0.276	0.600
Friends and social life stressors	107	−46.55	0.94	108	−45.52	0.83	0.682	0.410
Negative life events	127	−55.36	1.08	130	−54.49	1.05	0.331	0.565
Economic resources	126	38.36	0.07	130	38.50	0.09	1.484	0.224
Working resources	68	50.54	0.38	72	50.03	0.44	0.767	0.383
Couple resources	103	55.14	0.61	107	54.97	0.63	0.035	0.851
Child resources	125	65.95	0.47	130	65.94	0.52	0.000	0.985
Family resources	112	49.39	0.71	117	47.86	0.79	2.072	0.151
Friends and social life resources	105	49.96	0.98	107	47.28	1.23	2.879	0.091
Positive life events	127	48.77	0.77	130	50.74	0.77	3.274	0.072

aSocioeconomic information was obtained for most cases (this is the reason for the higher sample sizes in those variables).

^bHighest educational and occupational levels reached by parents.

^cIncomplete secondary school level.

^dNon-skilled worker.

^eScale range: 3–12 points, with higher scores for better housing conditions.

^fScale range: 0–9 points, with higher scores for better conditions.

^gT-scores from each item evaluated in the Life Stressors and Social Resources Inventory (LISRES).

^*Univariate ANOVA was performed for each variable.