Table 3.
Estimated standard deviation differences in free testosterone and insulin like growth factor-I (IGF-I) concentrations at 53, 60–64 years, and change between these ages, between the hypothetical lowest and highest socioeconomic position (slope index of inequality).
| N | Testosterone, 53y | P | Testosterone, 60–64y | P | Δ Testosterone | P | |
|---|---|---|---|---|---|---|---|
| Men | |||||||
| Paternal occ. class (4y) | 417 | −0.03(−0.28, 0.23) | 0.83 | −0.21(−0.46, 0.04) | 0.10 | −0.18(−0.52, 0.16) | 0.30 |
| Own education (26y) | 415 | −0.13(−0.39, 0.13) | 0.33 | −0.46(−0.71, −0.20) | <0.001 | −0.29(−0.64, 0.06) | 0.10 |
| Occupational class (53y) | 436 | −0.18(−0.44, 0.09) | 0.20 | −0.34(−0.60, −0.08) | 0.01 | −0.13(−0.49, 0.23) | 0.48 |
| Lifetime SEP score | 400 | −0.20(−0.54, 0.14) | 0.25 | −0.49(−0.82, −0.15) | <0.01 | −0.23(−0.68, 0.22) | 0.32 |
| Women | |||||||
| Paternal occ. class (4y) | 526 | 0.61(0.31, 0.92) | <0.001 | 0.33(0.05, 0.61) | 0.02 | −0.11(−0.29, 0.07) | 0.23 |
| Own education (26y) | 528 | 0.08(−0.23, 0.39) | 0.63 | 0.09(−0.19, 0.37) | 0.54 | 0.05(−0.13, 0.24) | 0.56 |
| Occupational class (53y) | 538 | −0.09(−0.42, 0.23) | 0.58 | 0.17(−0.13, 0.47) | 0.27 | 0.11(−0.08, 0.30) | 0.25 |
| Lifetime SEP score | 499 | 0.41(−0.02, 0.83) | 0.06 | 0.34(−0.06, 0.73) | 0.09 | −0.01(−0.25, 0.24) | 0.96 |
| N | IGF-I, 53y | P | IGF-I, 60–64y | P | Δ IGF-I | P | |
| Men | |||||||
| Paternal occ. class (4y) | 719 | 0.08(−0.16, 0.32) | 0.52 | 0.12(−0.14, 0.37) | 0.37 | 0.02(−0.24, 0.28) | 0.88 |
| Own education (26y) | 713 | −0.25(−0.50, 0.00) | 0.05 | −0.35(−0.61, −0.08) | 0.01 | −0.05(−0.31, 0.22) | 0.73 |
| Occupational class (53y) | 746 | −0.24(−0.50, 0.02) | 0.07 | −0.30(−0.57, −0.02) | 0.03 | −0.01(−0.29, 0.27) | 0.94 |
| Lifetime SEP score | 692 | −0.25(−0.58, 0.08) | 0.14 | −0.26(−0.61, 0.09) | 0.14 | 0.04(−0.31, 0.38) | 0.84 |
| Women | |||||||
| Paternal occ. class (4y) | 760 | −0.21(−0.47, 0.05) | 0.12 | −0.28(−0.53, −0.03) | 0.03 | −0.04(−0.29, 0.21) | 0.77 |
| Own education (26y) | 767 | −0.16(−0.43, 0.10) | 0.23 | −0.43(−0.68, −0.17) | <0.01 | −0.20(−0.46, 0.06) | 0.13 |
| Occupational class (53y) | 783 | −0.37(−0.64, −0.10) | <0.01 | −0.27(−0.54, 0.00) | 0.05 | 0.13(−0.14, 0.40) | 0.35 |
| Lifetime SEP score | 719 | −0.37(−0.74, 0.00) | 0.05 | −0.56(−0.91, −0.20) | <0.01 | −0.11(−0.47, 0.25) | 0.54 |
Δ calculated as 60–64y minus 53y hormone concentration; occupational class was that of the highest in the household and derived using the Registrar General's classification.