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Table 1 Completed and missing data for education and job done for most of working life questions, stratified by age and gender

From: Validity of two simple measures for estimating life-course socio-economic position in cross-sectional postal survey data in an older population: results from the North Staffordshire Osteoarthritis Project (NorStOP)

  Age left school (n = 7877) Full-time education after school (n = 7713) Adult qualifications (n = 7713) Job done for most of working life (n = 2831)
  Completed (n = 7713) Missing(n = 164) Completed (n = 7581) Missing (n = 132) Completed (n = 7577) Missing (n = 136) Completed (n = 2670) Missing (n = 161)
Gender n (%)
Female 4327 (98.0) 89 (2.0) 4232 (97.8) 95 (2.2) 4244 (98.1) 83 (1.9) 1480 (92.6) 118 (7.4)
Male 3386 (97.8) 75 (2.2) 3349 (98.9) 37 (1.1) 3333 (98.4) 53 (1.6) 1190 (96.5) 43 (3.5)
Age n (%)
50–59 2485 (98.6) 35 (1.4) 2458 (98.9) 27 (1.1) 2459 (99.0) 26 (1.0) 1124 (97.7) 27 (2.3)
60–69 2313 (98.3) 39 (1.7) 2277 (98.4) 36 (1.6) 2279 (98.5) 34 (1.5) 963 (94.0) 62 (6.0)
70–79 1980 (97.5) 50 (2.5) 1941 (98.0) 39 (2.0) 1935 (97.7) 45 (2.3) 491 (90.3) 53 (9.7)
80+ 935 (95.9) 40 (4.1) 905 (96.8) 30 (3.2) 904 (96.7) 31 (3.3) 92 (82.9) 19 (17.1)