Table 2

 Comparison of symptom interval between groups of differing age, tumour location, and histological grade

nMedian symptom interval (months)Range (months)Interquartile range (months)SDp Value
Age ⩽3 years451.00.3 to 96.00.5 to 2.416.8<0.000
Age > 3 years1303.00.03 to 120.01.0 to 9.022.5
High grade731.50.03 to 60.00.75 to 3.07.6<0.000
Low grade914.00.03 to 120.01.5 to 12.028.1
Supratentorial804.00.03 to 120.01.1 to 11.529.70.002
Infratentorial942.00.03 to 60.00.9 to 4.08.5
Cortical hemispheric tumours255.00.03 to 120.01.7 to 24.040.40.003
Deep hemispheric tumours162.00.5 to 20.00.6 to 8.35.6
Central tumours394.00.1 to 96.01.0 to 12.026.1
Posterior fossa tumours942.00.03 to 60.00.9 to 4.08.5