Table 2

 Agreement between social class data based on birth records and adult reports

Birth recordsTotal
IIIIII NM†III M‡IVV
*Level agreement = 54.0%; weighted κ statistic = 0.47, p<0.001. †non-manual; ‡manual. Occupational social class was categorised as follows: I (highest)—professional; II—managerial; IIINM—non-manual, skilled non-manual; IIIM—manual, skilled manual; IV—manual, semi-skilled; and V (lowest)—unskilled manual.
Adult reports I 136 69105532275
II41 340 2142714134941
IIINM682 280 1324029569
IIIM653181 2099 4013803120
IV224125357 348 2651121
V0196053 215 338
Total1915698192974886925 6364*