Residents live longer with more nurses
The rule would add roughly 102,000 nurses and aides across 15,000 facilities, about a tenth more care time per resident. What happens when nursing home staffing moves has been measured under a natural experiment in Denmark. Residents died sooner when nurses left.
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Value
The stream is time alive for people who are near the end of it. This site weights human life at the top of its scale and does not lower that weight because the people are old; what age changes is how much life is at stake in each case, and that belongs to the Impact. The residents are mostly over eighty-five, many with dementia, and the difference an additional nurse makes is not dramatic medicine — it is someone noticing a change in breathing, a fall, a pressure sore before it becomes sepsis. What is priced here is only the extra time alive; comfort and dignity are a separate argument. The grief of the families is included at a tenth of the residents' own gain, the allowance this site books alongside every stream of deaths. The value is the highest the scale allows, because the stream is time alive and nothing else is folded into it.
Impact
About 1.2 million people live in certified nursing facilities, and 102,000 additional nurses and aides would raise care time per resident by roughly a tenth [3][4]. What that does to survival was measured in Denmark, where a parental-leave programme unexpectedly pulled a tenth of nursing home nurses out of work: mortality among residents aged 85 and over rose 13 percent and stayed up [5]. Read as a rate of exchange, each percent of staffing is worth 1.3 percent of mortality. That figure comes from a sudden loss of experienced staff, which is more disruptive than a gradual addition, so 0.6 is used here instead, in a range from 0.15 to 1.3. A tenth more staffing then lowers mortality by 6 percent. Against roughly 360,000 resident deaths a year that is 21,600 deaths postponed, and postponed is the right word: the people concerned have on average about eighteen months of life ahead, so the gain is about 32,000 years of life a year, in a range from 11,000 to 65,000; the families' share adds a tenth on top. The Impact is the largest gain in this debate and still a modest one, because what is bought is months rather than years, for people who have few of either.
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| Deaths among nursing home residents each year [3] | 1.2 million residents, roughly three in ten of whom die in a year | 360,000 deaths a year | |
| × | Share postponed by a tenth more staffing Setting, range 0.15 to 1.3: a tenth fewer nurses raised mortality 13 percent in the Danish measurement; a sudden loss disrupts more than a gradual addition, and the study measured nurses where this rule mostly adds aides, so under half of that rate is used [5] | 10 % staffing × 0.6 = 6 % | 21,600 deaths a year |
| × | Years of life behind each postponed death Setting, range 0.5 to 3 years: residents at this stage have about eighteen months of life ahead on average [3] | 1.5 years | 32,400 years of life |
| × | Value of the years of life a year in full health counts 40,000 euro on this site; a year at this stage is counted as half of one, for age and frailty, which is the adjustment and not a different rate | 20,000 euro each | 648 million euro |
| + | Grief of the families the allowance this site books alongside every stream of deaths: a tenth of the loss to the person who dies | 10 % of 648 million euro | 713 million euro |
| ÷ | Normalised Impact scale of this evaluation | 500 million euro a point | 1.43 |
Plausibility
The Danish study is the cleanest evidence anyone has on this question. A parental-leave programme opened in 1994 and was taken up heavily by nurses, which cut nursing home nurse employment by a tenth for reasons that had nothing to do with any resident's health [5]. The counterfactual is the same facilities before the programme and comparable facilities with fewer eligible nurses, and the confounder that would normally ruin such a comparison — that badly run homes both lose staff and lose residents — is removed, because who took leave depended on having a young child rather than on the state of the home. Reverse causation cannot arise for the same reason. Three things stand between that finding and this one. The Danish measurement concerns qualified nurses, whom the study found could not be replaced, while three quarters of the hires this rule requires are aides, whom facilities in that same shortage did replace — so the hour that is added here is not the hour that was measured. Denmark's nursing homes were far better staffed than American ones to begin with, which argues that the American return should if anything be larger, and the study measured staff leaving rather than staff arriving, which argues the other way because a sudden loss disrupts more than a slow gain does. The last two are why the rate of exchange used here is under half of what was measured; the first is a matter of whether the measurement carries at all, and it holds the plausibility half a point lower. The Plausibility is a little above the middle: the design is as clean as this question allows, and the hour it measured — a qualified nurse's — is not the hour most of this rule adds.
Counterfactual: the same Danish facilities before the 1994 parental-leave programme, and facilities with fewer eligible nurses. Design: quasi-experimental — a policy-induced labour supply shock used as an instrument (Friedrich and Hackmann, Review of Economic Studies 2021 [5]). Confounder: poorly run homes both losing staff and losing residents, removed because take-up depended on having a young child. Direction: no reverse causation, eligibility was set by parenthood. Ceiling: quasi-experimental 8.0 binds, below the 9.0 a published study would otherwise allow; a context transfer of 2.5 covers the country, the direction of the change, and the skill mix — the study measured qualified nurses, who could not be replaced, while three quarters of the hires here are aides, who could. The size doubt sits in the 0.15 to 1.3 band on the rate of exchange, not in P.