Table 5.

Family resources and family interaction by the cluster groups: (Females = 609)

	Cluster 1 (n = 157)	Cluster 2 (n = 188)	Cluster 3 (n = 34)	Cluster 4 (n = 36)	Cluster 5 (n = 75)	Cluster 6 (n = 85)	Cluster 7 (n = 34)	P-value (χ2, F statistics)
									Family resources
Welfare receipt in 1966 (%yes)	22.9%	27.7%	26.5%	36.1%	34.7%	36.5%	52.9%	P < 0.01
Mother’s education (mean ± SD, range 0–18)	11.2 ± 2.14	10.6 ± 2.56	10.7 ± 1.70	10.6 ± 1.84	10.9 ± 1.89	10.2 ± 2.06	10.1 ± 2.16	P < 0.05
Number of children <19 in home (mean ± SD, range 1–15)	4.0 ± 1.99	4.18 ± 2.10	4.62 ± 2.45	4.39 ± 2.41	4.47 ± 2.22	4.66 ± 2.20	4.38 ± 2.63	P = 0.31
Family type (% of mother alone family)	29.9%	30.3%	35.3%	41.7%	49.3%	41.2%	50.0%	P = 0.20
Family interaction
Discipline (mean ± SD, range 1–9)	4.71 ± 1.93	5.09 ± 1.77	5.18 ± 1.86	5.42 ± 1.78	5.52 ± 1.90	5.36 ± 1.84	6.06 ± 1.85	P < 0.01
Affection (mean ± SD, range 1–7)	4.93 ± 1.40	4.80 ± 1.48	4.41 ± 1.13	4.89 ± 1.33	5.13 ± 1.43	4.68 ± 1.54	4.88 ± 1.60	P = 0.27

1. No problems

2. Mild conduct problems

3. High shyness

4. Moderate problems but not shy or aggressive

5. Moderate aggressiveness

6. Mild underachievement

7. Multiple problems