Lawrence Chik

716 total citations
44 papers, 559 citations indexed

About

Lawrence Chik is a scholar working on Pediatrics, Perinatology and Child Health, Pulmonary and Respiratory Medicine and Obstetrics and Gynecology. According to data from OpenAlex, Lawrence Chik has authored 44 papers receiving a total of 559 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Pediatrics, Perinatology and Child Health, 11 papers in Pulmonary and Respiratory Medicine and 8 papers in Obstetrics and Gynecology. Recurrent topics in Lawrence Chik's work include Neonatal and fetal brain pathology (19 papers), Neonatal Respiratory Health Research (9 papers) and Maternal and Perinatal Health Interventions (6 papers). Lawrence Chik is often cited by papers focused on Neonatal and fetal brain pathology (19 papers), Neonatal Respiratory Health Research (9 papers) and Maternal and Perinatal Health Interventions (6 papers). Lawrence Chik collaborates with scholars based in United States and China. Lawrence Chik's co-authors include Mortimer G. Rosen, Robert J. Sokol, Roger H. Hertz, Victor J. Hirsch, Ilan E. Timor‐Tritsch, Agneta D. Borgstedt, LeRoy J. Dierker, Ilan T. Rosen, Thomas L. Gross and James D. Knoke and has published in prestigious journals such as American Journal of Obstetrics and Gynecology, The Journal of Pediatrics and Electroencephalography and Clinical Neurophysiology.

In The Last Decade

Lawrence Chik

42 papers receiving 484 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Lawrence Chik United States 13 366 190 159 53 51 44 559
Apgar United States 3 240 0.7× 86 0.5× 160 1.0× 55 1.0× 71 1.4× 7 508
Charlotte Hellsten Sweden 8 309 0.8× 113 0.6× 199 1.3× 29 0.5× 35 0.7× 13 511
Orla Sheil Ireland 12 331 0.9× 173 0.9× 237 1.5× 39 0.7× 36 0.7× 21 596
Louise Sipos United States 9 579 1.6× 319 1.7× 305 1.9× 62 1.2× 99 1.9× 11 783
Marcia A. Hyvarinen United States 7 301 0.8× 101 0.5× 173 1.1× 81 1.5× 55 1.1× 8 496
Robert W. Naef United States 14 294 0.8× 282 1.5× 124 0.8× 17 0.3× 61 1.2× 18 547
Paula Broussard United States 12 733 2.0× 561 3.0× 356 2.2× 27 0.5× 108 2.1× 18 1.0k
Goodlin Rc United States 10 130 0.4× 98 0.5× 79 0.5× 17 0.3× 62 1.2× 29 307
Edile Murdoch United Kingdom 12 399 1.1× 182 1.0× 157 1.0× 30 0.6× 78 1.5× 20 590
DJ Henderson‐Smart Australia 14 369 1.0× 247 1.3× 410 2.6× 176 3.3× 162 3.2× 21 758

Countries citing papers authored by Lawrence Chik

Since Specialization
Citations

This map shows the geographic impact of Lawrence Chik's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Lawrence Chik with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Lawrence Chik more than expected).

Fields of papers citing papers by Lawrence Chik

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Lawrence Chik. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Lawrence Chik. The network helps show where Lawrence Chik may publish in the future.

Co-authorship network of co-authors of Lawrence Chik

This figure shows the co-authorship network connecting the top 25 collaborators of Lawrence Chik. A scholar is included among the top collaborators of Lawrence Chik based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Lawrence Chik. Lawrence Chik is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Brooks, Kathryn H., et al.. (1999). Variability of Adjustments to Indices in Determining Patient Risk in Biochemical Screening. Fetal Diagnosis and Therapy. 14(1). 41–46. 14 indexed citations
2.
Chik, Lawrence, et al.. (1997). Precise bivariant normal distributions of maternal serum AFP and free bHCG for trisomy 21 (T21) biochemical screening. American Journal of Obstetrics and Gynecology. 176(1). S88–S88. 1 indexed citations
3.
Chik, Lawrence, Kevin Spencer, Mark P. Johnson, et al.. (1997). Precise gaussian distribution functions of maternal serum α-fetoprotein and free β-subunit of human chorionic gonadotropin for trisomy 21 screening: Improved accuracy for patient counseling. American Journal of Obstetrics and Gynecology. 177(4). 882–886. 3 indexed citations
4.
Evans, Mark I., Lawrence Chik, Joseph E. O’Brien, et al.. (1995). MOMs (multiples of the median) and DADs (disciminant aneuploidy detection): Improved specificity and cost-effectiveness of biochemial screening for aneuploidy with DADs. American Journal of Obstetrics and Gynecology. 172(4). 1138–1149. 26 indexed citations
5.
Eden, Robert D., et al.. (1991). The mammary stimulation test—A predictor of preterm delivery?. American Journal of Obstetrics and Gynecology. 164(6). 1409–1419. 4 indexed citations
6.
Sokol, Robert J. & Lawrence Chik. (1988). A prototype system for perinatal knowledge engineering using an artificial intelligence tool. Journal of Perinatal Medicine. 16(4). 273–281. 5 indexed citations
7.
Gross, Thomas L., et al.. (1984). What affects fetal pulmonary maturation during diabetic pregnancy?. American Journal of Obstetrics and Gynecology. 150(3). 270–274. 23 indexed citations
8.
Rosen, Mortimer G. & Lawrence Chik. (1984). The association between cesarean birth and outcome in vertex presentation: Relative importance of birth weight, Dubowitz scores, and delivery route. American Journal of Obstetrics and Gynecology. 150(6). 775–779. 11 indexed citations
9.
Sorokin, Yoram, LeRoy J. Dierker, Lawrence Chik, Laura Kollar, & Mortimer G. Rosen. (1982). Fetal heart rate accelerations in low-risk and diabetic pregnancies during active behavioral periods. American Journal of Obstetrics and Gynecology. 143(2). 224–225. 1 indexed citations
10.
Hertz, Roger H., Ilan E. Timor‐Tritsch, LeRoy J. Dierker, Lawrence Chik, & Ilan T. Rosen. (1979). Continuous ultrasound and fetal movement. American Journal of Obstetrics and Gynecology. 135(1). 152–154. 29 indexed citations
11.
Rosen, Mortimer G., et al.. (1977). Clinical application of high-risk scoring on an obstetric service. American Journal of Obstetrics and Gynecology. 128(6). 652–661. 78 indexed citations
12.
Chik, Lawrence, et al.. (1976). "Prediction" of the one-minute Apgar score from fetal heart rate data.. PubMed. 48(4). 452–5. 18 indexed citations
13.
Chik, Lawrence, Robert J. Sokol, Mortimer G. Rosen, & Agneta D. Borgstedt. (1976). Computer interpreted fetal electroencephalogram. American Journal of Obstetrics and Gynecology. 125(4). 541–544. 7 indexed citations
14.
Chik, Lawrence, Victor J. Hirsch, Robert J. Sokol, & Mortimer G. Rosen. (1975). An optimized algorithm for the detection of uterine contractions in intrauterine pressure recordings. Computers and Biomedical Research. 8(3). 294–301. 5 indexed citations
15.
Chik, Lawrence, Victor J. Hirsch, Robert J. Sokol, & Mortimer G. Rosen. (1974). Temporal characterization of intrauterine pressure data. American Journal of Obstetrics and Gynecology. 120(4). 496–501. 9 indexed citations
16.
Chik, Lawrence, et al.. (1974). Computer diagnosis of labor progression: V. Reliability of a subroutine for evaluating station and descent of the fetal presenting part.. PubMed. 13(5). 183–6. 5 indexed citations
17.
Chik, Lawrence, et al.. (1974). Computer diagnosis of labor progression: IV. An on-line interactive digital computer subroutine for evaluating descent of the fetal presenting part during labor.. PubMed. 13(5). 177–82. 5 indexed citations
18.
Sokol, Robert J., et al.. (1974). Computer diagnosis of labor progression. American Journal of Obstetrics and Gynecology. 119(6). 767–774. 6 indexed citations
19.
Sokol, Robert J., et al.. (1973). Computer diagnosis of labor progression. II. Application of an on-line interactive prgram in 45 high-risk labors.. PubMed. 11(4). 154–8. 7 indexed citations
20.
Rosen, Mortimer G., et al.. (1971). Human fetal brain response to sound during labor. American Journal of Obstetrics and Gynecology. 109(1). 82–85. 22 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Apgar Breakdown of academic impact, for papers by Charlotte Hellsten Breakdown of academic impact, for papers by Orla Sheil Breakdown of academic impact, for papers by Louise Sipos Breakdown of academic impact, for papers by Marcia A. Hyvarinen Breakdown of academic impact, for papers by Robert W. Naef Breakdown of academic impact, for papers by Paula Broussard Breakdown of academic impact, for papers by Goodlin Rc Breakdown of academic impact, for papers by Edile Murdoch Breakdown of academic impact, for papers by DJ Henderson‐Smart
Rankless by CCL
2026