Table 4

 Exposure to psychosocial factors according to the FINJEM and dementia (total dementia, possible Alzheimer’s disease, and possible vascular dementia)

VariableR%All cases with dementia (n = 195)Cases with possible AD (n = 108)Cases with possible VD (n = 59)
CAdj. OR†95% CIC%Adj. OR†95% CIC%Adj. OR†95% CI
C, cases; R, control group subjects; AD, Alzheimer’s disease; VD, vascular disease.
In the assessment of the time weighted mean score of psychosocial exposures, probands with <10 years estimable worktime were excluded from analysis.
*To calculate tests for trend, the exposure scores were included as continuous variables in the logistic regression model.
†Adjusted for age, region, sex, dementia in parents, education, smoking (pack-years), and psychosocial network at age 30.
Challenge at work (time weighted mean score on a composite scale 1–5)
    ⩽3.55222.76432.81.03835.21.02135.61.0
    >3.5, <4.514262.09850.30.50.3 to 0.94945.40.30.2 to 0.73254.20.50.2 to 1.1
    ⩾4.520.9
    p for trend*p = 0.01p = 0.007p = 0.04
Social climate at work (time weighted mean score on a composite scale 1–5)
    ⩽3.510643.68141.51.04844.41.02542.41.0
    >3.5, <4.59039.38141.51.30.8 to 2.23936.11.20.6 to 2.32847.51.20.6 to 2.6
    ⩾4.5
    p for trend*p = 0.42p = 0.50p = 0.96
Control possibilities at work (time weighted mean score on a composite scale 1–5)
    ⩽3.52812.23216.41.01614.81.01220.31.0
    >3.5, <4.516873.413066.70.50.3 to 1.17165.70.60.2 to 1.44169.50.40.2 to 1.2
    ⩾4.5
    p for trend*p = 0.02p = 0.10p = 0.03
Work load (time weighted mean score on a composite scale 1–5)
    ⩽2.03013.12211.31.01413.01.0610.21.0
    >2.0, <3.09541.56231.81.00.4 to 2.32825.90.50.2 to 1.52949.22.20.6 to 8.6
    ⩾3.07131.07840.02.00.9 to 4.64541.72.10.8 to 5.61830.51.70.4 to 6.3
    p for trend*p = 0.24p = 0.19p = 0.61
Perceived risks for error at work (time weighted mean score on a composite scale 1–5)
    ⩽2.013257.610553.81.05954.61.03050.81.0
    >2.0, <3.04519.73920.01.10.6 to 2.32018.51.40.6 to 3.51627.11.50.6 to 4.1
    ⩾3.0198.3189.22.10.8 to 5.487.42.20.5 to 8.7711.92.10.6 to 7.2
    p for trend*p = 0.001p = 0.009p = 0.004
Social demands at work (time weighted mean score on a composite scale 1–5)
    ⩽3.513157.211458.51.05954.61.04372.91.0
    >3.5, <4.55624.54523.11.00.6 to 1.92523.11.40.7 to 3.11016.90.40.1–1.0
    ⩾4.593.931.50.20.04 to 1.332.80.50.1 to 2.7
    p for trend*p = 0.05P = 0.19p = 0.01
Supervisor support (time weighted mean score on a composite scale 1–5)
    ⩽3.53515.33316.91.01614.81.01322.01.0
    >3.5, <4.515969.412564.10.70.4–1.46863.01.10.4–2.64067.80.60.2 to 1.5
    ⩾4.5
    p for trend*p = 0.23p = 0.71p = 0.15
Working time arrangements (time weighted mean score on a scale 0–2)
    0198.32211.31.01110.21.0813.61.0
    >0, <0.515165.911961.00.80.3 to 1.86459.30.80.3 to 2.44067.80.40.1 to 1.4
    ⩾0.52611.42110.80.90.3 to 2.61211.11.00.3 to 3.958.50.40.1 to 2.3
    p for trend*p = 0.13p = 0.31p = 0.25