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Table 1 Participation in the HUNT3 survey (2006-08) aged 30+, and individuals with valid data on subjective memory impairment (SMI) after imputation, by age and gender

From: Gender differences in subjective memory impairment in a general population: the HUNT study, Norway

  Women Men Total
  Invited Participateda Valid SMI datab Invited Participateda Valid SMI datab Invited Participateda Valid SMI datab
Age n n % n %c n n % n %c n n % n %c
30-39 7832 4019 51.3 3107 39.7 7914 2862 36.2 1877 23.7 15746 6881 43.7 4984 31.7
40-49 8524 5447 63.9 4459 52.3 9212 4557 49.5 3348 36.3 17736 10004 56.4 7807 44.0
50-59 8415 5991 71.2 5033 59.8 8898 5418 60.9 4350 48.9 17313 11409 65.9 9383 54.2
60-69 6892 5137 74.5 4495 65.2 6909 4674 67.7 3969 57.4 13801 9811 71.1 8464 61.3
70-79 4583 3080 67.2 2612 57.0 4011 2664 66.6 2287 57.0 8594 5744 66.8 4899 57.0
80+ 4056 1439 35.5 1086 26.8 2330 1001 43.0 782 33.6 6386 2440 38.2 1868 29.3
Total 40302 25113 62.3 20792 51.6 39274 21176 53.9 16613 42.3 79576 46289 58.2 37405 47.0
  1. aParticipated by returning answered Q1. bValid data on all nine SMI questions after imputation. c Per cent of invited.