Table 2.

Frequency of responses to the latent variables language ability and attention problems

	PLBW Frequencies % (1/2/3) ±	Control Group Frequencies % (1/2/3) ±
Language 18 months: item 1	67.2/23.8/9.0	84.5/13.3/2.2
item 2	45.8/7.4/46.8	67.9/7.3/24.8
item 3	47.8/32.8/19.4	65.9/25.8/8.3
Attention 18 months: item 1	62.5/33.5/4.0	64.4/31.9/3.7
item 2	14.0/60.0/26.0	13.1/63.4/23.5
item 3	67.2/28.3/4.5	67.9/28.8/3.3
Language 36 months: item1	98.5/1.2/0.3	99.0/0.9/0.1
item 2	98.2/1.0/0.8	98.7/1.1/0.2
item 3	97.0/1.7/1.3	97.9/1.4/0.7
item 4	91.5/8.3/0.2	94.8/4.9/0.3
item 5	91.2/7.6/1.2	94.3/5.0/0.7
item 6	48.8/36.8/14.4	61.1/30.2/8.7
Attention 36 months: item 1	61.7/34.3/4.0	66.4/31.2/2.4
item 2	29.3/55.7/15.0	30.9/55.6/13.5
item 3	18.6/67.5/13.9	15.7/69.0/15.3
item 4	63.3/34.2/2.5	66.9/31.4/1.7
item 5	56.8/40.0/3.2	60.7/36.8/2.5

± Language ability: 1/2/3 = yes/sometimes/not yet; Attention problems: 1/2/3 = not true/sometimes true/very true. Category 1 represents better language skills and less attention problems, and category 3 worse language skills and more attention problems.