Table 4. Clinical information and results regarding NBAS test.

	Total sample (N = 91)	Cases (N = 42)	Controls (N = 49)	P*
GA at NBAS test (w)	42.68±2.82	43.11±2.81	42.73±2.5	0.49
Adaptation time (d)	28.44±17.24	30.21±18.06	26.92±16.54	0.36
Scores from the clusters in the BAS test
Habituation	6.33±1.34	6.07±1.64	6.57±0.91	0.03
Social-interactive	6.17±1.14	5.97±1.23	6.33±1.04	0.32
Motor	5.43±0.69	5.33±0.91	5.52±0.43	0.82
Organization of state	3.90±0.95	3.73±1.16	4.05±0.71	0.82
Regulation of state	4.26±1.38	3.49±1.25	4.93±1.12	< 0.01
Attention	6.24±1.58	5.94±1.71	6.5±1.42	0.48

Results are expressed as mean ± and standard deviation. *MANCOVA statistical analysis was used to compare scores in cases vs controls from each area of the NBAS test adjusting for smoking status, gender, Apgar score below 7, gestational age at NBAS test and days of adaptation. GA: Gestational age. w =  weeks; d =  days.