Abbreviations for Clinical Measures Used the Text.

<p><b>Note:</b> LMP* is the corrected last menstrual period based on PNG guidelines.</p><p>Abbreviations for Clinical Measures Used the Text.</p

Comparison of Clinical and Late Ultrasound Estimates of Gestational Age Against Reference Ultrasound.

<p><b>Note:</b> LOA, 95% confidence levels of agreement (in days); SE, standard error; GW, gestational weeks; LMP, last menstrual period; LMP*, corrected last menstrual period based on PNG guidelines; SFH, symphysis-pubis fundal height; ICC, Intraclass correlation.</p><p>Comparison of Clinical and Late Ultrasound Estimates of Gestational Age Against Reference Ultrasound.</p

Receiver Operating Characteristic Space for Mid- and Late-Pregnancy USS and Clinical Estimators to Predict PTB.

<p>Note that the insets are magnifications of the regions of interest (outlined by the dotted lines). The solid gray lines with gray numbering are the F-measure isolines in the receiver operating characteristic space. BS(e): external BS; BS(n): neuromuscular BS; BS(t): total BS; LMP: last menstrual period; mid-scan: mid-pregnancy USS; late-scan: late-pregnancy USS; 1x SFH: linear SFH model; 3x SFH: sequential SFH model; LMP/SFH: LMP/SFH model; LMP*: corrected LMP according to PNG guidelines.</p

Enrolment Characteristics of Pregnant Women (n = 688) from Rural Madang Province, Papua New Guinea, 2009–2012.

<p><b>Note:</b> SD, standard deviation.</p><p>*by light microscopy and/or qPCR</p><p>Enrolment Characteristics of Pregnant Women (n = 688) from Rural Madang Province, Papua New Guinea, 2009–2012.</p

Bland-Altman Plots and Levels of Agreement.

<p>A) BS (external); B) BS (neuromuscular); C) BS (total); D) LMP; E) mid-pregnancy ultrasound; F) late-pregnancy ultrasound; G) linear SFH model; H) sequential SFH model; I) Quickening; J) corrected LMP*. The continuous horizontal lines are average levels of agreement. The dashed lines denote the 95% levels of agreement between the clinical estimators and the reference method. R represents the Pearson correlation coefficient and p values indicate significance of the parametric correlations. Significant trends are present in all comparisons, indicating significant variability in the bias across the data range. The correlations are all positive, meaning that the clinical estimators tend to further underestimate lower estimates of GA, which is demonstrated by the high number of PTB predicted by most clinical methods (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124286#pone.0124286.t004" target="_blank">Table 4</a>).</p

Demographic characteristics of study subjects, Papua New Guinea, 2010.

<p>Demographic characteristics of study subjects, Papua New Guinea, 2010.</p

Serum analysis (µg/L) of peripheral neuropathy cases, Papua New Guinea, 2010.

*<p>normal range in whole blood.</p><p>UDL  =  under detection limit.</p><p>Below normal range in bold <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0072566#pone.0072566-McQuilty1" target="_blank">[29]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0072566#pone.0072566-London1" target="_blank">[30]</a>.</p

Diversity of diet among cases of peripheral neuropathy, Papua New Guinea, 2010.

<p>Diversity of diet among cases of peripheral neuropathy, Papua New Guinea, 2010.</p

Risk factors associated with peripheral neuropathy, Papua New Guinea, 2010.

*<p>P-value <0.05.</p>†<p>unbiased estimates.</p>**<p>those with >3 foods against those with ≤3 foods in their diet.</p