I found it interesting to see hospitalisation rates are significantly higher in women as compared to men in the under 40s. Impact of being a main carer to children and/or older family members, risk associated with occupation, increased likelihood of seeking medical care?
As others have said, these aren't hospitalisation rates, they're cases in hospital with a covid diagnosis, you don't know the number of cases - as well as the very plausible maternity reason, women are generally more likely to seek treatment in any case in those age groups - they're also more negatively more likely to catch covid - more care home and medical staff.
So I don't think it's at all surprising that the numbers are high. Similarly the high numbers of under 5's is I'm sure more reflective of the number of the age group in hospital than those in hospital with covid.