Characteristics of study members.

Note: sample sizes vary due to missing data. Blood samples from CaPS phase II for IGFs were only available for 739 (62%) of the 1,195 men who attended the CaPS phase V clinic.SD = Standard deviation.*Median and quartiles are presented, due to skewed distributions; the mean (SD) for IGFBP-2 was: 484.2 (292.3) ng/ml and for insulin: 10.0 (6.9) mu/l in Boyd Orr; 7.6 (14.8) mu/l in CaPS.†Data are not available to distinguish between the social classes III manual (M) and III non-manual (NM) in Boyd Orr.‡Armed forces, unemployed or unclassifiable.§Milk groups range from lowest to highest intake: none, ½ pint (∼237 g) or less, ½ pint (∼237 g) to one pint (∼473 g), more than one pint (∼473 g).