Skip to main content

Table 5 Descriptive results: behaviour, motor development, language skills, intelligence

From: Neurobehavioural and cognitive effects of prenatal exposure to organochlorine compounds in three year old children

  N Mean Median Std. Deviation Minimum Maximum
Valid Missing
Bayley Scales of infant Development II NL: Mental Scale Index score 112 102 109,51 108,00 15,14 69 163
Bayley Scales of infant Development II NL: Motor Scale index score 93 121 101,97 101,00 12,78 79 137
Snijders-Oomen Non-Verbal Intelligence test: Performance Scale 125 89 108,66 110,00 15,92 67 148
Snijders-Oomen Non-Verbal Intelligence test: Reasoning Scale 125 89 115,13 115,00 12,50 66 150
Snijders-Oomen Non-Verbal Intelligence test: Total Scale 125 89 113,72 114,00 13,59 70 150
Reynell Language Development Scale: Language Development Total score (language comprehension) 101 113 102,80 104,00 17,82 59 142
milestones: smiling (months) 176 38 1,44 1,00 1,01 1 9
milestones: reach for and take a toy (months) 180 34 2,91 3,00 1,19 1 8
milestones: rolling over (months) 156 58 5,30 5,00 1,66 1 10
milestones: sit up straight (months) 154 60 7,29 7,00 1,44 4 15
milestones: crawling (months) 130 84 9,25 9,00 2,15 4 21
Milestones: first steps alone 69 145 13,06 14,00 2,57 8 20
IBQ 12 mths: Stress and Latency to Approach Sudden or Novel Stimuli 151 63 2,81 2,81 ,81 1,20 4,58
IBQ 12 mths: Smiling and Laughter 151 63 5,41 5,47 ,74 3,36 7,00
IBQ 12 mths: Distress to Limitations 151 63 3,04 3,00 ,70,412 1,33 5,05
IBQ 12 mths: Activity Level 151 63 3,32 3,29 ,88 1,24 5,47
IBQ 12 mths: Duration of Orienting 150 64 3,41 3,41 ,947 1,36 6,29
Masculine play behaviour (%) 100 114 43,68 37,67 31,08 0,00 100,00
Feminine play behaviour (%) 100 114 41,51 36,99 30,39 0,00 100,00
Non-gender specific play behaviour (%) 100 114 14,81 9,61 18,31 0,00 94,00