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All Journal Jurnal Ilmiah Matematika dan Pendidikan Matematika (JMP) Majalah Ilmiah Matematika dan Statistika (MIMS)
Baisaku, Nurul Azizah
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Mathematics

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ANALISIS SURVIVAL DENGAN COX PROPORTIONAL HAZARD PADA KASUS DEMAM TIFOID Baisaku, Nurul Azizah; Jajang, Jajang; Nurhayati, Nunung
Majalah Ilmiah Matematika dan Statistika Vol 22 No 1 (2022): Majalah Ilmiah Matematika dan Statistika
Publisher : Jurusan Matematika FMIPA Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/mims.v22i1.29325

Abstract

A common problem found in survival data is the presence of censored data. The length of hospitalization of Typhoid fever patients until declared cured is one of example of this data. Here, we use Cox regression model to analysis this data. Partial likelihood is one of the methods of estimating parameters for Cox regression model. In many cases of censored data, two objects (patients) have the same length of hospitalization (ties). Therefore, to estimate the parameters of the model must use the right method. Here we used partial likelihood Breslow, Efron, and Exact methods. The study was motivated by how the three methods performed for Cox regression model. The data used for the implementation of these methods is length of hospitalization of Typhoid fever patients at Mekar Sari Hospital-Bekasi in 2020. Based on AIC criteria, we found that exact method is the best model (minimum AIC) for parameter estimation of Cox regression model. Referring to the Cox regression model by using a significance level of 10%, there are five predictor variables that affects the length of patient hospitalization. The five variables are age, vomiting, dirty tongue, hemoglobin, and leukocyte.Keywords: Typhoid fever, Cox regression, Breslow method, Efron method, exact method.MSC2020: 62N02, 62N03
ANALISIS ASSESMENT SALES RATIO PADA NILAI JUAL OBJEK PAJAK DENGAN ZONA NILAI TANAH TERHADAP STANDAR YANG DITETAPKAN IAAO Baisaku, Nurul Azizah; Guswanto, Bambang Hendriya; Linawati, Dian
Jurnal Ilmiah Matematika dan Pendidikan Matematika Vol 12 No 2 (2020): Jurnal Ilmiah Matematika dan Pendidikan Matematika (JMP)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jmp.2020.12.2.3588

Abstract

ABSTRACT. Land values in NJOP used as a basis for taxing land are often different from land values in the Land Value Zone (ZNT). The difference in land values contained in the NJOP and ZNT causes uncertainty about local tax revenue and creates injustice for the government and the community. Based on this, an analysis of Assesment Sales Ratio (ASR) is used to determine the determination of land values in NJOP with ZNT against the standard size determined by the International Association of Assessing Officers (IAAO). The results of the ASR analysis show that the determination of NJOP in Pamijahan Village, Plumbon District, Cirebon Regency is outside the standard range set by the IAAO, which is 0.90 to 1.10 (90% -110%). This can be seen from the results of the measurement of central tendency, which is a mean of 10.53%, a median of 0.1037, and a weighted mean of 6.136%. The comparisons between components of the measurement results of the central tendency indicate the occurrence of regressivity or downtrend. The Assessment Ratio in Pamijahan Village, Plumbon District, Cirebon Regency also did not show good uniformity, as indicated by a COD value of 0.66% and a COV value of 70.02% which were outside the standard set by IAAO i.e. the minimum and maximum values for COD and COV are 5% and 20%, respectively.Keywords: Tax Object Sales Value (NJOP), Assessment Sales Ratio (ASR), International Association of Assessing Officers (IAAO). ABSTRAK. Nilai tanah pada NJOP yang digunakan sebagai dasar dalam pengenaan pajak suatu tanah sering kali berbeda dengan nilai tanah yang ada pada Zona Nilai Tanah (ZNT). Perbedaan nilai tanah yang terdapat pada NJOP dan ZNT menyebabkan ketidak pastian penerimaan pajak daerah dan menimbulkan ketidak adilan bagi pemerintah dan masyarakat. Berdasarkan hal tersebut, digunakan analisis Assesment Sales Ratio guna mengetahui penetapan nilai tanah pada NJOP dengan ZNT terhadap ukuran standar yang ditetapkan oleh International Association of Assessing Officers (IAAO). Hasil analisis ASR menunjukkan bahwa penetapan NJOP di Desa Pamijahan, Kecamatan Plumbon, Kabupaten Cirebon berada di luar rentang standar yang ditetapkan IAAO yaitu sebesar 0,90 sampai dengan 1,10 (90%-110%). Hal ini terlihat dari hasil pengukuran tendensi sentral, yaitu mean sebesar 10,53% , median sebesar 0,1037, dan weighted mean sebesar 6,136%. Serta perbandingan antar komponen hasil pengukuran tendensi sentral menunjukkan terjadinya regresivitas atau kecenderungan turun. Assessment Ratio di Desa Pamijahan, Kecamatan Plumbon, Kabupaten Cirebon juga tidak menunjukkan keseragaman yang baik, yang ditunjukkan dengan nilai COD sebesar 0,66% dan nilai COV sebesar 70,02% yang berada di luar standar yang ditetapkan oleh IAAO yaitu nilai COD dan COV minimal 5% dan maksimal 20%.Kata Kunci: Nilai Jual Objek Pajak (NJOP), Assessment Sales Ratio (ASR), International Association of Assessing Officers (IAAO).
Co-Authors Guswanto, Bambang Hendriya Jajang Jajang Linawati, Dian Nunung Nurhayati