scholarly journals SUSTAINABILITY OF MECHANISATION IN THE NIGERIAN CONSTRUCTION INDUSTRY / MECHANIZACIJOS TVARUMAS NIGERIJOS STATYBŲ SEKTORIUJE

2012 ◽  
Vol 18 (1) ◽  
pp. 91-105 ◽  
Author(s):  
Godwin Iroroakpo Idoro
Keyword(s):  
Construction Industry ◽  
Significant Influence ◽  
Field Survey ◽  
Delivery Time ◽  
Spearman Correlation ◽  
Production Methods ◽  
Project Outcome ◽  
Construction Plant ◽  
Spearman Correlation Test ◽  
The Relationship

The study evaluates the level of mechanisation and its sustainability, the relationship between mechanisation and its sustainability and between mechanisation and project outcome. To achieve these, a field survey involving a sample of eighty projects was conducted with the aid of questionnaires. Data were collected on the production methods adopted in excavation and concreting, whether or not the use of plant for the operations were sustainable and the initial and actual delivery time and cost of the projects sampled. The data were analysed using ranking, mean, t-test and Spearman correlation test. The study reveals that the levels of mechanisation and sustainability of mechanisation in the two operations are slightly above average. It also reveals that the level of sustainability of mechanisation has significant influence the level of mechanisation while of mechanisation has significant influence on quality standards and productivity. The study concludes that there is a strong need for measures that will improve the level of mechanisation and its sustainability in the industry and recommend the introduction of plant mobilisation fund by clients, incentives on importation of construction plant and an effective and functional lease market for construction plant as some of the measures that will improve mechanised construction. Santrauka Tyrime vertinamas mechanizacijos lygis ir tvarumas, taip pat ryšys tarp mechanizacijos ir jos tvarumo bei tarp mechanizacijos ir projekto rezultatų. Įvertinti pasirinkta 80 projektų imtis ir atlikta anketinė apklausa. Buvo renkami duomenys apie kasimo ir betono liejimo darbų metodus, apie tai, ar įrangos naudojimas darbams buvo tvarus, taip pat apie pradinį ir realų darbų atlikimo laiką bei imčiai atrinktų projektų kainą. Duomenys analizuoti naudojant rangavimo, vidurkių, t testo metodus ir Spearmano koreliacijos testą. Tyrimas rodo, kad dviejų minėtų darbų atveju mechanizacijos ir mechanizacijos tvarumo lygiai šiek tiek viršija vidurkį. Jis taip pat rodo, kad mechanizacijos tvarumo lygis daro nemažą įtaką mechanizacijos lygiui, o mechanizacija daro reikšmingą įtaką kokybės standartams ir našumui. Tyrime daroma išvada, kad labai reikia priemonių, kurios pagerins sektoriaus mechanizacijos lygį ir tvarumą, bei rekomenduojamos kelios mechanizuotą statybą pagerinsiančios priemonės: klientams įsteigti įrangos mobilizacijos fondą, skatinti statybų įrangos importą ir sukurti efektyvią bei funkcionuojančią statybos įrangos nuomos rinką.

scholarly journals Influence in-sourcing and outsourcing of consultants on construction project performance in Nigeria

2011 ◽  
Vol 11 (4) ◽  
pp. 45-58
Author(s):  
Godwin Iroroakpo Idoro
Keyword(s):  
Significant Influence ◽  
Random Sampling ◽  
Field Survey ◽  
Project Performance ◽  
Project Delivery ◽  
Stratified Random Sampling ◽  
Delivery Time ◽  
Project Development ◽  
Project Outcome ◽  
Common Practices

Research studies have discovered that outsourcing has several benefits and the practice is fast replacing in-sourcing especially with regard to construction consultants. In the attempt to examine the benefits of the two approaches on project outcome, this study investigates the influence of the use of in-sourced and outsourced consultants on project performance in Nigeria. The objectives are to determine the use of in-sourcing and outsourcing for selected consultants, compare the use of the two approaches in project delivery and their influence on project performance and compare the performance of projects in which in-sourced and outsourced selected consultants were engaged. To achieve these objectives, a questionnaire design approach was adopted. A field survey involving a sample of 164 projects were selected by stratified random sampling. Data were collected using structured questionnaires and analysed using percentage, mean, Spearman and t-tests. The results of the study reveal that clients engage both in-sourced and outsourced consultants in project development and that the practice has significant influence on project performance. It also discovered that the use of the two approaches has differing benefits on project delivery time and cost. The study concludes that in-sourcing and outsourcing are common practices in project development and that clients are facing a challenge in deciding which approach to adopt. The study also discovers that both approaches has benefits associated with project outcome and suggests that clients should consider these benefits in deciding in-sourced and outsourced consultants.

NFLUENCE OF QUALITY PERFORMANCE ON CLIENTS’ PATRONAGE OF INDIGENOUS AND EXPATRIATE CONSTRUCTION CONTRACTORS IN NIGERIA

2010 ◽  
Vol 16 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Godwin Iroroakpo Idoro
Keyword(s):  
Construction Industry ◽  
Growth And Development ◽  
Field Survey ◽  
T Test ◽  
Spearman Correlation ◽  
Quality Performance ◽  
Correlation Test ◽  
Spearman Correlation Test ◽  
Better Than

Contractors operating in Nigeria are classified as either indigenous or expatriates. The latter is often giving preference over the former in the award of contracts and stakeholders consider this practice unhealthy for growth and development. This study evaluates the influence of the quality performance of the two categories of contractors on their patronage. The objectives are to determine the level and difference in the patronage and quality performance of indigenous and expatriate contractors and the correlation between clients’ assessment of the quality performance and patronage of indigenous and expatriate contractors in the Nigerian construction industry. To achieve these objectives, a field survey involving a sample of 43 clients selected from the population of organised clients in Nigeria was conducted. Structured questionnaires were used to collect data. The data collected were analysed to determine the ranking and test of difference in clients’ patronage and clients’ assessment of quality performance between the two categories of contractors using mean and t‐test respectively. The correlation between patronage and quality performance was analysed using Spearman correlation test. The study established that expatriate contractors are being giving preference in the award of contracts. It also established that clients perceive the quality performance of expatriate contractors to be better than that of indigenous contractors and attributed the preference in patronage to this difference. It suggested that indigenous contractors should embark on measures that will improve their quality performance in order to stop the preference for expatriate contractors. Santrauka Nigerijoje dirbantys rangovai klasifikuojami i vietinius ir emigravusius. Sudarant sutartis pastariesiems paprastai suteikiama pirmenybe. Tačiau laikoma, kad tokia praktika nera palanki augimui ir pletrai. Šiame tyrime vertinama abieju kategoriju rangovu darbo kokybes itaka klientams. Tikslas ‐ nustatyti vietiniu ir emigravusiu rangovu darbo kokybes lygi, kokybes skirtumus bei koreliacija tarp klientu ivertintos vietiniu ir emigravusiu rangovu, dirbančiu Nigerijos statybos pramoneje, kokybes. Šiam tikslui pasiekti atliktas tyrimas, apimantis 43 klientus, atrinktus iš Nigerijos klientu aibes. Duomenims rinkti naudoti klausimynai. Surinkti duomenys buvo analizuoti naudojant vidurkio ir t testo metodus, norint nustatyti reitingus bei patikrinti kokybes skirtumus tarp dvieju kategoriju rangovu. Koreliacija analizuota taikant Spir‐meno koreliacijos testa. Tyrimo metu nustatyta, kad konkursu metu pirmenybM suteikiama emigravusiems rangovams. Taip pat nustatyta klientus pastebint, jog emigravusiu rangovu darbo kokybe yra geresne nei vietiniu rangovu. Siūloma, kad vietiniai rangovai turetu atsižvelgti ityrimo rezultatus, ir tai galetu padeti gerinti ju darbu kokybe bei sumažinti emi‐gravusiu rangovu pranašuma.

HEALTH AND SAFETY MANAGEMENT EFFORTS AS CORRELATES OF PERFORMANCE IN THE NIGERIAN CONSTRUCTION INDUSTRY/SVEIKATOS IR SAUGOS DARBE VALDYMO PASTANGOS NIGERIJOS STATYBŲ PRAMONĖJE

2008 ◽  
Vol 14 (4) ◽  
pp. 277-285 ◽  
Author(s):  
Godwin Iroroakpo Idoro
Keyword(s):  
Work Environment ◽  
Construction Industry ◽  
Field Survey ◽  
Safety Management ◽  
Health And Safety ◽  
Spearman Correlation ◽  
Performance Variables ◽  
Safe Work ◽  
Spearman Correlation Test ◽  
Accident Injury

This study investigates the level of efforts made by Nigerian contractors to maintain a healthy and safe work environment. The objectives are to determine the level of management efforts made by contractors on H&S and their correlation with H&S performance. To achieve these objectives, a field survey involving a sample of 40 contractors selected by stratified random sampling from the contractors registered with the Federation of Construction Industry of Nigeria was carried out. For the study, 6 H&S management variables and 7 H&S performance variables were selected. The H&S management variables are in compliance with H&S regulations, provision of H&S facilities, structures for managing H&S in head and site offices, provision of PPE and H&S incentives, while the H&S performance variables are respondents’ assessment of the performance of structures for managing H&S in head and site offices, accident, injury, accident per worker, injury per worker and injury per accident rates. Data were collected using structured questionnaires and analysed by mean and Spearman correlation test. The results reveal that contractors’ efforts on structures for managing H&S on site are the best correlates of H&S performance, but their level is low. The levels of contractors’ efforts in provision of PPE, compliance with H&S regulations are high, but these efforts are not correlates of H&S performance. The levels of contractors’ efforts in structures for managing H&S in head office and provision of H&S incentives are low and they have low correlation with H&S performance. The study considers these results as indication that the management efforts made by Nigerian contractors to ensure a healthy and safe work environment are yet to have meaningful impact. It suggests increased efforts on local H&S regulations, structures for managing H&S in both head and site offices and provision of H&S incentives as measures for improving safety in the Nigerian construction industry. Santrauka Mokslinio tyrimo tikslas buvo gerinti sveikatos ir saugos darbe realizavimą Nigerijos statybų pramonėje. Straipsnyje nagrinėjamos Nigerijos rangovų pastangos išlaikyti sveiką ir saugią darbo aplinką. Siekiant šių tikslų, buvo atliktas praktinis tyrimas, kuriame dalyvavo 40 rangovų, atsitiktinai parinktų iš Nigerijos statybų pramonės federacijos registro. Buvo išrinkti šeši sveikatos ir saugos darbe valdymo kintamieji ir septyni sveikatos ir saugos darbe realizavimo kintamieji. Sveikatos ir saugos darbe valdymo kintamieji siejami su sveikatos ir saugos taisyklėmis, paslaugomis, valdymo struktūromis administracijoje ir statybos aikštelėse, asmens saugos priemonėmis, sveikatos ir saugos darbe skatinimu. Sveikatos ir saugos darbe realizavimo kintamieji yra respondentų sveikatos ir saugos darbe valdymo struktūros realizavimo įvertinimas tiek įmonės administracijoje, tiek statybos aikštelėse. Tai nelaimingi atsitikimai, susižeidimai, nelaimingų atsitikimų skaičius vienam darbuotojui, susižeidimų skaičius vienam darbuotojui ir sužeidimų skaičius per nelaimingų atsitikimų dažnį. Duomenys buvo renkami naudojant apklausas ir analizuojami naudojant vidutinę ir Spearman koreliacijas. Rezultatai parodė, kad rangovų valdymo kintamasis, sveikatos ir saugos valdymo struktūra valdyboje ir statybos aikštelėje geriausiai koreliuoja su sveikatos ir saugos darbe realizavimu, tačiau jų lygis yra žemas. Rangovų pastangos aprūpinti asmeninėmis saugos priemonėmis siejasi su sveikatos ir saugos darbe taisyklėmis, tačiau jos nekoreliuoja su sveikatos ir saugos darbe realizavimu. Teigiama, kad rangovų pastangos yra menkos. Šio tyrimo rezultatai laikomi kaip požymiai, kad Nigerijos rangovų pastangos užtikrinti sveikatą ir saugų darbą turi didelę įtaką. Siūloma laikytis sveikatos ir saugos taisyklių ir administracijoje, ir statybos aikštelėse, gerinti Nigerijos statybose dirbančių žmonių saugą.

scholarly journals Evaluating Levels of Project Planning and their Effects on Performance in the Nigerian Construction Industry

2012 ◽  
Vol 9 (2) ◽  
pp. 39-50 ◽  
Author(s):  
Godwin Idoro
Keyword(s):  
Public Sector ◽  
Construction Industry ◽  
Construction Projects ◽  
Project Planning ◽  
Project Delivery ◽  
Delivery Time ◽  
Spearman Correlation ◽  
Public And Private ◽  
Spearman Correlation Test ◽  
And Performance

This study compares the level of project planning on public andprivate sectors projects and its impact on performance. Thepurpose is to create awareness of the level and effectivenessof the planning done by public and private clients in the deliveryof construction projects. A questionnaire survey administeredto a sample of 130 client representatives selected by stratifi edrandom sampling from the population of public and private clientsin the Nigerian construction industry is used and analysed usingdescriptive statistics, the t-test and Spearman correlation test. Theresults show that the level of preconstruction planning on privatesector projects is higher than that of public sector projects whilethe level of contract planning done by the latter is higher thanthat of the former. Furthermore, the performance of private sectorprojects is higher than that of public sector projects in many of theparameters used. However, the level of preparation of life-cyclecharts that concern project delivery time in both public and privatesectors projects is low and the level of project planning in the twocategories of projects has a limited impact on project performance.The understanding of how public and private sectors projectsperform in planning and its impact are expected to assist publicand private clients to know the challenges ahead of them in theireffort to improve the planning and performance of their projects.

scholarly journals HUBUNGAN ANTARA KESEPIAN DENGAN SELFIE-LIKING PADA MAHASISWA

2017 ◽  
Vol 16 (2) ◽  
pp. 122
Author(s):  
Evina Krisnawati ◽  
Christiana Hari Soetjiningsih
Keyword(s):  
College Students ◽  
Social Media ◽  
Significant Relationship ◽  
Quantitative Methods ◽  
Positive Relationship ◽  
Sampling Technique ◽  
Spearman Correlation ◽  
Purposive Sampling ◽  
Spearman Correlation Test ◽  
The Relationship

This study aims to examine the relationship between loneliness and selfie-liking. The hypothesis of this research is that there is a positive relationship between loneliness and selfie-liking among college students. This research used correlational quantitative methods. Participants in this research was 64 students, which was taken by purposive sampling technique, with inclusive criteria: like to do selfie and in the last month post the selfie photos to social media as much as 4-6 times. Data were collected using the Loneliness Scale from UCLA Version 3 and selfie-liking measured by Selfie-Liking Scale.  The correlation was analyzed using the Spearman Correlation Test with SPSS 23 for Windows. The results showed there was a positive and significant relationship between loneliness and self-liking (r=.297; p=.009) which means the higher loneliness, the higher selfie-liking.

scholarly journals The Effect of Technical Competence in Balance Elements of Rhythmic Gymnastics on the Sportive Success of Taekwondo Poomsae Athletes

2018 ◽  
Vol 6 (9) ◽  
pp. 136
Author(s):  
Sezen Çimen Polat
Keyword(s):  
Technical Competence ◽  
Spearman Correlation ◽  
Balance Test ◽  
Correlation Test ◽  
Rhythmic Gymnastics ◽  
Significant Difference ◽  
Spearman Correlation Test ◽  
Level Of Significance ◽  
The Relationship

This study aims to investigate the effect of technical competence in certain balance elements, an important parameter in rhythmic gymnastics, on sportive success in taekwondo poomsae athletes and the relationship between them. The study was conducted on 12 female taekwondo athletes (age: 17.6±1.2; height: 159.26±3.1 cm; weight: 50.79±1.82 kg; BMI: 20.88±0.98 kg/m2). The participants were selected from successful athletes who were in the top 6 in their own category in the national taekwondo competition held this year. The athletes performed 6 balance elements in rhythmic gymnastics, i.e. side passé (SP), 90° forward (90°F), side split with hand support (SSWHS), Arabesque with trunk forward (A), Cossack (C) and free leg to the side (FLS), and the Y balance test. The relationship between these balances that were assessed by 3 international judges and success rating was identified using the Spearman correlation test. The level of significance was accepted as p<0.05. As result, a statistically significant difference was found between side passé and split with hand support, balances used in rhythmic gymnastics, and success ratings (p<0.05). While no statistically significant difference was found between other balances, i.e. 90° forward, arabesque with trunk forward, cossack and free leg to the side and sportive success, there was a high relationship between them. In addition, there was no statistically significant difference between sportive success and right and left anterior (RAB, LAB) posteromedial (RPMB, LPMB) and posterolateral (RPLB, LPLB) reach distances. In conclusion, since the study found a high relationship between sportive success and technical competence of poomsae athletes in the two technical side balances, it is suggested that basic gymnastics training can be effective in improving the balancing skills of taekwondo poomsae athletes.

scholarly journals PERSPEKTIF HAMBATAN TERHADAP KEMUNGKINAN REMAJA BERHENTI MEROKOK

2017 ◽  
Vol 6 (2) ◽  
pp. 137
Author(s):  
Marsiana Wibowo
Keyword(s):  
Family Environment ◽  
Negative Relationship ◽  
Policy Enforcement ◽  
Spearman Correlation ◽  
Cross Sectional ◽  
Adolescent Smokers ◽  
Quit Smoking ◽  
Stop Smoking ◽  
Spearman Correlation Test ◽  
The Relationship

Merokok adalah perilaku yang masih sulit untuk dikendalikan dalam rangka investasi kesehatan. Usia remaja adalah usia inisiasi para perokok. Lebih cepat berhenti merokok, akan lebih menekan resiko kesehatan akibat merokok. Anggapan tentang kesulitan berhenti merokok menjadi salah satu tantangan dalam menyiapkan generasi bebas rokok. Tujuan penelitian ini adalah mengetahui hubungan persepsi hambatan berhenti merokok terhadap kemungkinan berhenti merokok. Peneliti menggunakan pendekatan cross sectional, dengan uji spearman correlation. Hasil menunjukkan hubungan yang negatif namun lemah pada pola hubungan hambatan berhenti merokok dengan kemungkinan remaja perokok untuk berhenti merokok, namun secara statistik bermakna. Memperhatikan pola hubungan ini, berbagai pihak yang terkait sebaiknya lebih menggiatkan upaya dalam mengendalikan pengkonsumsian rokok di kalangan remaja, daril ingkungan keluarga, lingkungan sosial, institusional, dan pemegangan kebijakan.   Smoking is a behavior that still hard to control in health investment context. Adolescent is initiation period for smoker. Earlier smoker to stop smoking, will put more benefit to pressure on the health risks of smoking. The assumptions about the difficulty of quitting is one of the challenges in preparing free tobacco generation. The purpose of this study was to determine the relationship between perception barriers against the possibility of smoking cessation. Researchers used cross sectional approach, with the Spearman correlation test. The results showed a negative relationship but weak on the relationship patterns of barriers to stop smoking with the possibility of adolescent smokers to quit smoking, but statistically significant.Taking into account this relationship pattern, the various stakeholders should further intensify efforts in controlling cigarette consumption among adolescents, from the family environment, the social environment, institutional, and policy enforcement.

scholarly journals Hubungan physical activity dengan fine motor skills pada anak usia 4 tahun

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Nur Indri Rahayu ◽  
Aini Dewi Monica ◽  
Jajat Jajat ◽  
Kuston Sultoni
Keyword(s):  
Physical Activity ◽  
Motor Skills ◽  
Fine Motor ◽  
Dominant Hand ◽  
Fine Motor Skills ◽  
Spearman Correlation ◽  
Correlation Test ◽  
Purposive Sampling ◽  
Spearman Correlation Test ◽  
The Relationship

Tujuan penelitian ini adalah menguji hubungan antara physical activity dengan fine motor skills pada anak usia 4 tahun. Metode yang digunakan adalah metode penelitian kuantitatif dengan pendekatan korelasional. Populasi dalam penelitian ini yaitu anak usia 4 tahun yang sedang menempuh pendidikan anak usia dini di PAUD, TK, dan KB di Kota Bandung. Jumlah sampel sebanyak 53 anak dengan teknik pengambilan sampel menggunakan purposive sampling. Instrumen yang digunakan berupa Accelerometer Actigraph dan 9-Hole Peg Test. Accelerometer Actigraph digunakan untuk mengukur tingkat physical activity atau aktivitas fisik dengan hasil yang menunjukan bahwa anak – anak paling banyak menghabiskan waktu di skor light daripada sedentary, moderate-to-vigorous dan vigorous. 9-Hole Peg Test digunakan untuk mengukur tingkat kemampuan motorik halus atau fine motor skills anak dengan hasil menunjukan bahwa anak lebih terampil dalam menggunakan tangan yang dominan. Data kemudian dianalisis dengan menggunakan Spearman Correlation Test. Hasil analisis data menunjukan tidak terdapat korelasi antara physical activity dengan fine motor skills baik pada tangan dominan (p=0,678>0,05) maupun dengan tangan non dominan (p=0,167>0,05) yang berarti tidak terdapat hubungan yang signifikan antara physical activity dengan fine motor skills pada anak usia 4 tahun. The relationship between physical activity and fine motor skills in 4-year-old children Abstract:The purpose of this study was to examine the relationship between physical activity and fine motor skills in 4-year-old children. The method used is a quantitative research method with the correlation research approach. The population in this study were 4-year-old children who were taking early education in PAUD, TK, and KB in Bandung City. A total of 53 4-year-old children participated in this study by using a purposive sampling technique. The instrumen used were Accelerometer Actograph and 9-Hole Peg Test. The accelerometer actigraph is used to measure the level of physical activity and the results show that children spend the most time on the light score rather than sedentary, moderate-to-vigorous and vigorous score. 9-Hole Peg Test is used to measure the level of fine motor skills of children and the results showing that children are more skilled in using the dominant hand. Data were analyzed using the Spearman Correlation Test. The results of data analysis showed there is no correlation between physical activity and fine motor skills both in dominant hand (p=0.678>0,05) and with the non-dominant hand (p=0,167>0,05) which meant there are no significant relationship between physical activity and fine motor skills in 4-year-old children.

scholarly journals Reincarnation of MSMEs after the Government's Policy on Economic Recovery Due to the Covid-19 Pandemic in Indonesia

2022 ◽  
Vol 27 ◽  
pp. 452-462
Author(s):  
Muh. Ruslan Abdullah ◽  
Fasiha Fasiha ◽  
Abd. Kadir Arno
Keyword(s):  
National Economy ◽  
Small And Medium Enterprises ◽  
Government Policies ◽  
Economic Recovery ◽  
Spearman Correlation ◽  
Positive Growth ◽  
Spearman Correlation Test ◽  
Ministry Of Finance ◽  
Medium Enterprises ◽  
The Relationship

Micro, Small, and Medium Enterprises (MSMEs) are experiencing a slump due to the COVID-19 pandemic, and it is feared that it will be challenging to get back up. At this time, the Indonesian government has issued policies through several ministries, including the Ministry of Finance and the Ministry of Health, to stabilize the national economy. Micro, Small, and Medium Enterprises (MSMEs) are the pillars of the national economy, so that this sector needs attention during this pandemic to reincarnate in a better direction. This study aims to find a correlation between government policies and the revival/reincarnation of MSMEs. Data was collected through a questionnaire distributed through the MSME group on Facebook. To find Carried out the relationship between the two variables, the Spearman correlation test. The results found that the level of strength of the relationship or correlation was 0.619, indicating that there was a strong correlation between government policies on the Reincarnation of MSMEs and had a unidirectional relationship that showed a positive value so that the better the government's alignment with government policies will further improve the state of the Reincarnation of MSMEs towards positive growth.

scholarly journals Analysis of Calcium Levels in Groundwater and Dental Caries in the Coastal Population of an Archipelago Country

2019 ◽  
Vol 7 (1) ◽  
pp. 134-138 ◽  
Author(s):  
Ristya Widi Endah Yani ◽  
Retno Palupi ◽  
Taufan Bramantoro ◽  
Darmawan Setijanto
Keyword(s):  
Dental Caries ◽  
Dental Health ◽  
Coastal Region ◽  
Calcium Content ◽  
Spearman Correlation ◽  
Cross Sectional ◽  
Minimum Age ◽  
Spearman Correlation Test ◽  
Living Organisms ◽  
The Relationship

BACKGROUND: The coastal region is the largest region in Indonesia as a country of the archipelago. Characteristics of groundwater content in coastal areas are very influential on dental health, especially dental caries. The main elements contained in 1-1000 mg/litre groundwater are calcium, magnesium, sodium, potassium, chlorine, bicarbonate, and sulfate groups. Calcium is an essential ingredient for living organisms that play a role in the formation of bone and tooth along with permeability of cell walls. AIM: This study aimed to analyse the relationship between calcium in groundwater with dental caries. METHOD: Analytical observational study with cross-sectional approach was implemented was coastal communities in Watu Ulo Jember Regency in February 2018 (3,686 inhabitants), with sample criteria of the minimum age of 12 years and consumed groundwater as drinking water at least 2 years by purposive side. The variables in this study were calcium levels as the independent variable and dental caries as the dependent variable. Calcium was measured using the spectrophotometric method. Caries measurements were performed using the DMF-T index. Data were presented descriptively in the table and analysed by Spearman Correlation test to analyze the relationship between groundwater calcium with dental caries. RESULTS: Average groundwater calcium content was 126.75 mg/litre (high category), and average dental caries was 2.2 (low category). Spearman correlation analysis showed p = 0.029 (p < 0.000), which means there was a correlation between groundwater calcium level with dental caries. CONCLUSION: There is a positive relationship between the calcium content of groundwater with dental caries.

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