def test_parse_zscore_and_percentile(self):
xml = TestVisitStatistics.XML1
doc = minidom.parseString(xml)
zandp = models.VisitStatistics._parse_zscore_and_percentile(
u'weight_for_length_or_height', doc)
self.assertTrue(util.isNaN(zandp.percentile))
self.assertTrue(math.fabs(zandp.zscore - -3.49) < 0.01)
visit_stats = models.VisitStatistics._parse_visit_statistics(xml)
self.assertTrue(util.isNaN(visit_stats.weight_for_length_or_height.percentile))
self.assertTrue(math.fabs(
visit_stats.weight_for_length_or_height.zscore - -3.49) < 0.01)
self.assertEquals(1461, visit_stats.age_in_days)
self.assertTrue(math.fabs(12.5 - visit_stats.body_mass_index) < 0.01)
# Try datastore code
visit_stats.put()
id = visit_stats.id
self.assertTrue(id is not None)
# Try str()
foo = str(visit_stats)
self.assertTrue(foo is not None)
def testBmiNan(self):
# Height is too small, return NaN
self.assertTrue(util.isNaN(
growthcalc.growthcalc.heightAndWeightToBmi(37.99, 24)))
# Weight is too small, return NaN
self.assertTrue(util.isNaN(
growthcalc.growthcalc.heightAndWeightToBmi(50, 0.8)))
def test2(self):
visit_stats = VisitStatistics.get_stats(
datetime.date(2005,03,21),
datetime.date(2007,03,25),
Sex.FEMALE,
8.2, 45, 74,
Measured.RECUMBENT, None)
# BMI
util.assertNear(self, 15.3, visit_stats.body_mass_index, 0.1)
# Weight-for-length-or-height
zandp = visit_stats.get_zandp('weight_for_length_or_height')
util.assertNear(self, -1.00, zandp.zscore, 0.01)
util.assertNear(self, 15.9, zandp.percentile, 0.1)
# Weight-for-age
zandp = visit_stats.get_zandp('weight_for_age')
util.assertNear(self, -2.87, zandp.zscore, 0.01)
util.assertNear(self, 0.2, zandp.percentile, 0.1)
# Length-or-height for age
zandp = visit_stats.get_zandp('length_or_height_for_age')
util.assertNear(self, -3.87, zandp.zscore, 0.01)
self.assertTrue(util.isNaN(zandp.percentile))
# BMI-for-age
zandp = visit_stats.get_zandp('body_mass_index_for_age')
util.assertNear(self, -0.33, zandp.zscore, 0.01)
util.assertNear(self, 37.2, zandp.percentile, 0.1)
# HC-for-age
zandp = visit_stats.get_zandp('head_circumference_for_age')
util.assertNear(self, -1.58, zandp.zscore, 0.01)
util.assertNear(self, 5.8, zandp.percentile, 0.1)
def testHCforAgeNaN(self):
# Head circumference is calculated slightly differently from other
# stats in a way that should make it come out NaN.
# This is "computeFinalZScore" from zscoreOtherRestricted.
# Equivalent to AA8 in the anthrotest.csv.
visit_stats = VisitStatistics.get_stats(
datetime.date(2007,12,14),
datetime.date(2008,02,29),
Sex.FEMALE,
8, 24.99, 63,
Measured.STANDING, None)
# HC-for-age
zandp = visit_stats.get_zandp('head_circumference_for_age')
self.assertTrue(util.isNaN(zandp.zscore))
self.assertTrue(util.isNaN(zandp.percentile))
def test1(self):
# Bernadette
sex = Sex.FEMALE
dateOfBirth = datetime.date(2005,03,21)
dateOfVisit = datetime.date(2007,03,25)
ageInDays = (dateOfVisit - dateOfBirth).days
weight = 8.2 # kg
length = 74.0 # cm
headCircumference = 45.0 # cm
measured = Measured.RECUMBENT
loh = growthcalc.growthcalc.NormalizedLengthOrHeight(
ageInDays, length, measured)
bmi = growthcalc.growthcalc.heightAndWeightToBmi(loh.lengthOrHeight, weight)
util.assertNear(self, 15.3, bmi, 0.1)
anthro = growthcalc.growthcalc.Anthro()
# Weight-for-length-or-height
zscore = anthro.getWeightZscoreConfigForLengthOrHeight(
Sex.map[sex], loh, weight, ageInDays)
percentile = growthcalc.growthcalc.zscoreToPercentile(zscore)
util.assertNear(self, -1.00, zscore, 0.01)
util.assertNear(self, 15.9, percentile, 0.1)
# Weight-for-age
zscore = anthro.getWeightZscoreConfigForAge(Sex.map[sex], ageInDays, weight)
percentile = growthcalc.growthcalc.zscoreToPercentile(zscore)
util.assertNear(self, -2.87, zscore, 0.01)
util.assertNear(self, 0.2, percentile, 0.1)
# Length-or-height for age
zscore = anthro.getLengthOrHeightZscoreConfigForAge(
Sex.map[sex], ageInDays, loh.lengthOrHeight, measured)
percentile = growthcalc.growthcalc.zscoreToPercentile(zscore)
util.assertNear(self, -3.87, zscore, 0.01)
self.assertTrue(util.isNaN(percentile))
# BMI-for-age
zscore = anthro.getBodyMassIndexZscoreConfigForAge(
Sex.map[sex], ageInDays, bmi, weight, loh.lengthOrHeight)
percentile = growthcalc.growthcalc.zscoreToPercentile(zscore)
util.assertNear(self, -0.33, zscore, 0.01)
util.assertNear(self, 37.2, percentile, 0.1)
# HC-for-age
zscore = anthro.getHeadCircumferenceZscoreConfigForAge(
Sex.map[sex], ageInDays, headCircumference)
percentile = growthcalc.growthcalc.zscoreToPercentile(zscore)
util.assertNear(self, -1.58, zscore, 0.01)
util.assertNear(self, 5.8, percentile, 0.1)
def testLengthOrHeightForAgeNotNan(self):
# Age is right on the border, but still valid.
# Equivalent to AA2 in the anthrotest.csv.
visit_stats = VisitStatistics.get_stats(
datetime.date(2002,03,15),
datetime.date(2007,04,14),
Sex.MALE,
10, 50, 65.6,
Measured.RECUMBENT, None)
# Length-or-height for age
zandp = visit_stats.get_zandp('length_or_height_for_age')
util.assertNear(self, -9.76, zandp.zscore, 0.01)
self.assertTrue(util.isNaN(zandp.percentile))
def test_nans(self):
'''This was a bug in bucket_zscore: all zscores are NaNs'''
xml= """
<growthserver_response date_generated="2011-02-08 21:35:49 +0000">
<input_data name="" sex="MALE" birth_date="2011-02-10"
visit_date="2011-02-08"
weight="30.0" height="40.0" height_position="STANDING"/>
<results age_in_days="-1" body_mass_index="181.1058322114833"
weight_for_length_or_height_percentile="NaN"
weight_for_length_or_height_zscore="NaN"
weight_for_age_percentile="NaN" weight_for_age_zscore="NaN"
length_or_height_for_age_percentile="NaN"
length_or_height_for_age_zscore="NaN"
body_mass_index_for_age_percentile="NaN"
body_mass_index_for_age_zscore="NaN"
head_circumference_for_age_percentile="NaN"
head_circumference_for_age_zscore="NaN"/>
</growthserver_response>"""
visit_stats = models.VisitStatistics._parse_visit_statistics(xml)
self.assertTrue(util.isNaN(util.bucket_zscore(
visit_stats.get_worst_zscore())))
def testIsNaN(self):
self.assertFalse(util.isNaN(3.5))
# String NaN is not float NaN.
self.assertFalse(util.isNaN("NaN"))
self.assertFalse(util.isNaN(u"NaN"))
self.assertTrue(util.isNaN(util.NaN))
