Table 2

Comparison of demographic features of cases with controls

Cases (n = 115) Controls (n = 115) p value
Median age (IQR)133  (121–161)133  (121–161)0.95 (MWU)
Males62621.00 (χ2)
Right handed1021050.64 (χ2)
Glasses89910.75 (χ2)
Single parent22150.21 (χ2)
Parents separated33300.66 (χ2)
One/both parents with university education11200.08 (χ2)
Social class
 I13
 II2121
 III47520.31 (MWU)
 IV1314
 V/UE3325
Housing
 Own6671
 Rent, private1480.40 (χ2)
 Rent, council3535
Number of sibs
 0139
 14456
 240200.72 (MWU)
 31814
 493
 >413
  • IQR, interquartile range; MWU, Mann–Whitney U test.