Descriptive statistics for standing balance by age group and gender in each HALCyon cohort.

Note: HAS = Hertfordshire Ageing Study; HCS = Hertfordshire Cohort Study; CaPS = Caerphilly Prospective Study; ABC1936 = Aberdeen Birth Cohort 1936; ELSA = English Longitudinal Study of Ageing; NSHD = MRC National Survey of Health and Development (1946 British birth cohort).a: 53 y only in NSHD; 52–54 y in ELSA;b: 63–64 y in HAS and Boyd Orr; 62–64 y in ABC1936 and in HCS;c: 65–68 y in ABC1936;d: 72–74 y in HAS;e: 80–83 y in HAS; 80–82 y in Boyd Orr.§Assessed with eyes open.*Approximate number of men (M) and women (W) study participants in each age category (Ns vary slightly between different capability measures and so those presented are for the sample with data on at least one of the capability measures unless the different capability measures have been assessed in different waves or on slightly different sub-samples):HAS: 72–74 y: M = 58, W = 36; 75–79 y: M = 106, W = 81; 80–83 y: M = 9, W = 4.HCS: 62–64 y: M = 56, W = 141; 65–69 y: M = 399, W = 562; 70–74 y: M = 214, W = 283.ELSA: 52–54 y: M = 291, W = 333; 55–59 y: M = 759, W = 906; 60–64 y: M = 577, W = 713; 65–69 y: M = 595, W = 678; 70–74 y: M = 507, W = 556; 75–79 y: M = 367, W = 461; 80–84 y: M = 233, W = 352; 85–89 y: M = 94, W = 164; 90+y: M = 28, W = 52.ABC1936: 62–64 y: M = 144, W = 161; 65–68 y: M = 100, W = 99.CaPS: 65–69 y: M = 307; 70–74 y: M = 440; 75–79 y: M = 325; 80+y: M = 79.Boyd Orr: 63–64 y: M = 11, W = 17; 65–69 y: M = 69, W = 98; 70–74 y: M = 72, W = 68; 75–79 y: M = 26, W = 37; 80–82 y: M = 4, W = 3.