. 2011 Aug 27;1(1):e000087. doi: 10.1136/bmjopen-2011-000087

Table 1.

Composition of the study sample from the NFBC 1966

	N	Hopkins Symptom Check List score>1.75^*	Depression diagnosis	Measure of early development^†			Measure of social environment^‡
	N	Hopkins Symptom Check List score>1.75^*	Depression diagnosis	High-risk^§	Low-risk	nd^¶	High-risk^§	Low-risk	nd^§
Males	2509	169 (7%)	79 (3%)	229 (9%)	2094 (83%)	186 (7%)	912 (36%)	1574 (63%)	23 (0.9%)
Females	2716	269 (10%)	136 (5%)	193 (7%)	2328 (86%)	195 (7%)	1034 (38%)	1649 (61%)	33 (1.2%)
All	5225	438 (8%)	215 (4%)	422 (8%)	4422 (85%)	381 (7%)	1946 (37%)	3223 (62%)	56 (1.1%)

There is prior support for using the Hopkins Symptom Check List score 1.75 as a cut-off when aiming to identify clinical depression.

^†

Defined by the presence of two out of three possible indicators for high early developmental risk: low birth weight, late motor development and late development of speech.

^‡

Defined by the presence of two out of five possible indicators for high social risk environment: unwanted pregnancy, low socio-economic status, single parenthood, low level of education of mother and low activity for information retrieval by the mother. For further details, see text.

^§

Both high early developmental and social risk present in 92 males (3,6%) and 67 females (2,4%).

^¶

Not defined.