Re: [Gnumed-devel] Re: CCHIT

[Karsten Hilbert]

On Sat, Nov 07, 2009 at 04:31:05PM +0100, Hilbert, Sebastian wrote:

> In the CCHIT document I found this requirement. 
> 
> The system shall allow the recording of date and time of birth (hour and 
> minutes if known) and subsequently be able to express age in hours for the 
> first 4 days of life, then in days from the 5th day of life through the first 
> 28 days, then in weeks beginning on the 29th day of life through the first 
> three completed months of life, and then in months beginning with the 4th 
> month of life through age 2 years.  Subsequent expressions of age may be 
> expressed by year and month (2 years 6 months) or with a decimal place for 
> expressing part of years (i.e. 2.5 years old) through age 18.
> 
> 
> We are doing some of this already don't we ?

Absolutely. Try it. We use different boundary conditions,
though, which were discussed with a pediatrician:

pycommon/gmDate.Time.py:

def format_interval_medically(interval=None):
        """Formats an interval.

        This isn't mathematically correct but close enough for display.
        """
        # years available ?
        if interval.days > 364:
                years, days = divmod(interval.days, 365)
                months, day = divmod(days, 30)
                if months == 0:
                        return "%sy" % int(years)
                return "%sy %sm" % (int(years), int(months))

        # months available ?
        if interval.days > 30:
                months, days = divmod(interval.days, 30)
                weeks = days // 7
                return "%sm %sw" % (int(months), int(weeks))

        # weeks available ?
        if interval.days > 7:
                return "%sd" % interval.days

        # days available ?
        if interval.days > 1:
                hours, seconds = divmod(interval.seconds, 3600)
                return "%sd (%sh)" % (interval.days, int(hours))

        # hours available ?
        if interval.seconds > (3*3600):
                return "%sh" % int(interval.seconds // 3600)
        # hours + minutes
        if interval.seconds > 3600:
                hours, seconds = divmod(interval.seconds, 3600)
                minutes = seconds // 60
                return "%sh %sm" % (int(hours), int(minutes))
        # minutes only
        if interval.seconds > (5*60):
                return "%sm" % (int(interval.seconds // 60))
        # seconds
        minutes, seconds = divmod(interval.seconds, 60)
        return "%sm %ss" % (int(minutes), int(seconds))

Karsten
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