| http://www.w3.org/ns/prov#value | - Despite its limitations (Miettinen, 1985; Rothman, 1986), indirect standardization of risk factors, taking one or two risk factors into account, was commonly used until the mid-1980s to assess outcomes, as for example with neonatal mortality rates adjusted to birth weight and/ or gestational age (Bowes Jr. et al., 1984; Hellier, 1977).
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