Table 2.

Knowledge of typical child development questionnaire items failed by ≥ 50 % of the sample

Question Response	Correct	% correct (95 % CI)
There is no cause for concern if a three-year-old child can recognize all Chinese characters, but does not speak in sentences.	False	50 (46–55)
It is normal for a one and a half-year-old child to have already developed definite hand preference.	False	46 (42–51)
A child with poor language skills can appear hyperactive and inattentive.	True	46 (42–51)
All children with speech and language delay should have a hearing test done.	True	42 (38–47)

Note: CI, confidence interval