New approaches and technical considerations in detecting outlier measurements and trajectories in longitudinal children growth data

Massara, Paraskevi; Asrar, Arooj; Bourdon, Celine; Ngari, Moses; Keown-Stoneman, Charles D. G.; Maguire, Jonathon L.; Birken, Catherine S.; Berkley, James A.; Bandsma, Robert H. J.; Comelli, Elena M.

doi:10.1186/s12874-023-02045-w

Table 2 Summary results on outlier method performance for measurement and trajectories

From: New approaches and technical considerations in detecting outlier measurements and trajectories in longitudinal children growth data

	Sensitivity				Specificity				Precision				Kappa
	Min value	Experiment with min value	Max value	Experiment with max value	Min value	Experiment with min value	Max value	Experiment with max value	Min value	Experiment with min value	Max value	Experiment with max value	Min value	Experiment with min value	Max value	Experiment with max value
sBIV	0.2%	CTX, Type a, 0.5, zMUAC	99.6%	TK, Type b, 5, zWFL	98.8%	multiple settings	99.8%	multiple settings	2.4%	CTX, Type a, 0.5, zWA	98.5%	CTX, ALL, 5, zMUAC	0.002894	CTX, Type a, 0.5, zMUAC	0.967156	TK, Type b, 5, zWFL
mBIV	0.06%	CTX, Type a, 0.5, zWA	98.4%	TK, Type b, 5, zWFL	99.7%	multiple settings	99.9%	multiple settings	3.5%	CTX, Type a, 0.5, zWA	99.5%	CTX, ALL, 5, zMUAC	0.000735	CTX, Type a, 0.5, zWA	0.96498	TK, Type b, 5, zWFL
SMOM	5.6%	CTX, Type c, 0.5, zWA	99.6%	TK, Type b, 5, zWFL	94.9%	CTX, Type a, 0.5, zMUAC	99.9%	CTX, ALL, 5, zMUAC	2.4%	CTX, Type c, 0.5, zWA	99.4%	CTX, ALL, 5, zMUAC	0.006147	CTX, Type c, 0.5, zWA	0.930517	TK, Type b, 5, zWFL
MMOM	5.7%	CTX, Type c, 0.5, zWA	99.0%	CTX, Type a, 5, zWA	95.2%	CTX, Type c, 0.5, zWFL	99.8%	CTX, ALL, 5, zMUAC	2.4%	CTX, Type c, 0.5, zWA	98.7%	CTX, ALL, 5, zMUAC	0.005508	CTX, Type c, 0.5, zWA	0.717394	CTX, Type a, 4, zMUAC
COT	25.8%	TK, Type a, 0.5, zWFL	99.8%	CTX, Type a, 5, zWA	73.8%	CTX, Type b, 0.5, zWA	98.9%	CTX, ALL, 5, zMUAC	14.9%	CTX, Type c, 0.5, zWA	99.1%	CTX, ALL, 5, zMUAC	-0.00023	CTX, Type c, 0.5, zWA	0.906329	CTX, Type a, 5, zWA
MMOT	2.3%	TK, ALL, 4, zWFL	24.9%	CTX, Type a, 5, zWA	93.9%	TK, Type b, 0.5, zWFL	99.9%	TK, ALL, 5, zWFL	13.1%	CTX, Type b, 0.5, zWFL	99.8%	TK, ALL, 5, zWFL	-0.00769	CTX, Type b, 0.5, zWA	0.3212.91	CTX, Type a, 5, zWA

Abbreviations: TARGet Kids! The applied research group for kids, zWFL Weight-for-length z-scores, zWA weight-for-age z-scores, CTX The co-trimoxazole prophylaxis trial, zMUAC mid-upper arm circumference-for-age z-scores, SD Standard deviation, mBIV Modified method for biologically implausible values detection, sBIV Static WHO cut-off values for biologically implausible values detection method, MMOM Multi-model outlier measurement detection method, SMOM Single-model outlier measurement detection method, COT Clustering-based outlier trajectory detection method, MMOT Multi-model outlier trajectory detection method
The "setting" of minimum or maximum values corresponds to a tuple specifying the dataset (CTX or TARGet Kids!), the type of the error, the intensity of the error in SD, and the anthropometric measure

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ISSN: 1471-2288

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