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Age effects on fine motor skills. The x-axis represents age per 5 years and the y-axis represents the clinical score or z-score of the spiral-drawing measures. Error bars represent SEM. Estimates are adjusted for sex. SD, standard deviation. The number of persons in each age category is n = 63 for category <65, n = 132 for category 65–69, n = 431 for category 70–74, n = 628 for category 75–79, n = 416 for category 80–84, n = 177 for category 85–89, and n = 41 for category 90+.
