For malnourished patients, their length of stay in hospital is increased by three days.

BBC: Millions of malnourished 'go unnoticed'

Meanwhile, better integration with social care would help speed up discharge and, therefore, reduce length of stay in hospital.

BBC: Organise urgent care better, NHS told

For example, the UVa study I discussed above employed a widely used, highly validated methodology that identified the thirty factors most significantly correlated to substantial increases in length of hospital stay, hospital charges, and mortality.

FORBES: Why Medicaid is a Humanitarian Catastrophe