Table 1.
Sample (n) | Population represented | Mean (S.E. mean) |
25th percentile | 75th percentile | |
---|---|---|---|---|---|
Total | 383,495 | 98,806,595 | 43.73 (0.08) | 32.10 | 50.60 |
Men | 204,734 | 53,979,890 | 43.65 (0.09) | 31.95 | 50.59 |
Women | 178,761 | 44,826,705 | 43.82 (0.08) | 32.32 | 50.62 |
White collar | 226,981 | 58,818,707 | 49.91 (0.06) | 42.23 | 59.06 |
Service | 48,878 | 12,254,998 | 32.73 (0.08) | 23.50 | 40.18 |
Farm | 10,222 | 2,567,081 | 33.24 (0.20) | 23.83 | 39.52 |
Blue collar | 97,414 | 25,165,808 | 35.69 (0.05) | 29.42 | 39.88 |
All mean contrasts for categories in sex and occupational sector are significant at P < 0.01.