Mycoplasma pneumoniae and Recurrent Respiratory Tract Infection Within One Year After Treatment in Infants: Risk Factors and Prevalence

Background: Mycoplasma pneumoniae pneumonia (MPP) is common in pediatric patients. Many studies showed that recurrent respiratory tract infections (RRTIs) are common in the year following treatment of MPP in infants, but the factors associated with the occurrence of RRTIs are rarely reported. Therefore, the present study aimed to identify these factors. Methods: This retrospective observational study included infants (< one year) who were clinically treated for MPP from January 2015 to December 2018. Clinical features and relevant data were collected on admission. The cases of the occurrence of RRTIs and the presence of related factors after one year of follow-up were investigated by questionnaires. The questionnaires contained the number of upper respiratory infections, tracheobronchitis, and pneumonia, the titers and course of MP-IgG and positive IgM antibody, eczema, pet ownership, interior decoration, inhaled or ingested allergens, exposure to environmental tobacco smoke, and gastrointestinal function. Independent significant risk factors for RRTIs were identified using binary logistic regression. Results: A total of 300 MPP cases were included, among which RRTIs occurred in 134 (44.7%) cases in the year following MPP treatment. Binary logistic regression analysis showed that a history of prematurity (OR = 6.336, 95% CI: 2.337 - 17.116, P ≤ 0.001), a history of exposure to inhaled or ingested allergens (OR = 2.527, 95% CI: 1.289 - 4.956, P = 0.007), and co-infection involving Chlamydia pneumoniae (OR = 2.787, 95% CI: 1.145 - 6.784, P = 0.024) were significantly and positively associated with RRTIs after MPP, while age (OR = 0.894, 95% CI: 0.825 - 0.970, P = 0.007) showed a negative correlation with RRTIs. Conclusions: RRTIs in the year following clinical treatment of MPP in infants are relatively common and significantly associated with the patient’s age, history of prematurity, history of exposure to inhaled or ingested allergens, and C. pneumoniae co-infection. Thus, these factors should be carefully assessed in pediatric MPP cases to predict the risk of RRTIs and appropriately manage the patient.

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Seroprevalence and risk factors of brucellosis in livestock in the wildlife and livestock interface area of Similipal Biosphere Reserve, India

Veterinary World ◽

10.14202/vetworld.2020.465-470 ◽

2020 ◽

Vol 13 (3) ◽

pp. 465-470

Author(s):

Sujit Kumar Behera ◽

Deepanker Das ◽

K. Balasubramani ◽

Savitha Chellappan ◽

Kaushik Rajaram ◽

...

Keyword(s):

Risk Factors ◽

Logistic Regression ◽

Biosphere Reserve ◽

Binary Logistic Regression ◽

Farm Animals ◽

Bivariate Analysis ◽

Binary Logistic Regression Analysis ◽

History Of ◽

Wildlife Reserve ◽

Shed Light

Background and Aim: Brucellosis is an important zoonotic disease that affects fertility in farm animals. The risk factors of brucellosis have not been well studied. This study aimed to understand the seroprevalence and risk factors of brucellosis among livestock in Bangriposi block of Mayurbhanj district in Odisha, a region that borders Similipal wildlife reserve. Materials and Methods: Rose Bengal plate test (RBPT) was carried out to estimate the seroprevalence of the livestock in this region. Bivariate analysis was carried out to analyze the association between the variables and brucellosis. Binary logistic regression was performed to assess the risk factors associated with brucellosis in the livestock. Results: Based on RBPT, the seroprevalence of brucellosis among cattle and goats was estimated to be 1.1% and 11.2%, respectively. Binary logistic regression analysis indicates that study area, age, goats, animals with a history of abortion, and rearing practices were the major risk factors in this region. Conclusion: This is one of the first studies in India to shed light on risk factors of brucellosis, an important neglected disease that affects the health of animals and humans and nation's economy.

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Risk factors for post-polypectomy bleeding; a retrospective case-control study of a high-volume colonoscopy center

Zeitschrift für Gastroenterologie ◽

10.1055/a-1690-7795 ◽

2021 ◽

Author(s):

Dimitrios Eleftheriadis ◽

Christina Imalis ◽

Guido Gerken ◽

Heiner Wedemeyer ◽

Jan Duerig

Keyword(s):

Risk Factors ◽

Significant Risk ◽

Ileocecal Valve ◽

Binary Logistic Regression ◽

High Volume ◽

Binary Logistic Regression Analysis ◽

Care Hospital ◽

Retrospective Case ◽

Polyp Size ◽

Epinephrine Injection

Abstract Background and aim Post-polypectomy bleeding (PPB) remains an uncommon although serious complication of colonoscopy. The aim of this study is to determine the PPB-prevalence in a secondary care hospital and its associated risk factors. Patients and methods We collected data from 581 patients, with the removal of 1593 polyps between August 2017 and August 2019. A univariate binary logistic regression analysis was conducted retrospectively. Results PPB occurred in only 10 cases, representing 1.7% of patients: immediate in 1.2% and delayed in 0.5%. The number of removed polyps per patient [4.5 (SD 2.59) for hemorrhagic vs. 2.74 (SD 1.98) for non-hemorrhagic group] and the propofol dose [232 mg (SD 93.07) for hemorrhagic vs. 133 mg (SD 57.28) for non-hemorrhagic group] were relevant patient-related risk factors. The polyp-based analysis showed the polyp size [18.4 mm (SD 10.44) for hemorrhagic vs. 4.42 mm (SD 4.29) for non-hemorrhagic group], the morphology [wide-based: OR 24.83 (95 % CI 2.76 – 223.44), pedunculated: OR 56.67 (95 % CI 5.03 – 638.29)], the location at ileocecal valve [OR 20.48, 95 % CI 1.81 – 231.97)], and the polypectomy method [hot snare piecemeal with epinephrine injection: OR 75.38 (95 % CI 7.67 – 741.21)] as significant risk factors for PPB, too. Conclusions The low rate of PPB confirms the safety of the procedure in non-tertiary, high-volume colonoscopy centers. The number of polyps removed per patient, the polyp size, morphology and location, as well as the sedation dose and the method of polypectomy were shown as relevant risk factors.

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Study of Risk Factors Associated with Suicide Attempt in Patients with Bipolar Disorder Type I

Journal of Neurosciences in Rural Practice ◽

10.1055/s-0040-1709347 ◽

2020 ◽

Vol 11 (02) ◽

pp. 291-298

Author(s):

Karthick Subramanian ◽

Vikas Menon ◽

Siddharth Sarkar ◽

Vigneshvar Chandrasekaran ◽

Nivedhitha Selvakumar

Keyword(s):

Risk Factors ◽

Bipolar Disorder ◽

Logistic Regression ◽

Family History ◽

Suicide Attempt ◽

Coping Strategies ◽

Binary Logistic Regression ◽

Type I ◽

Factors Associated ◽

History Of

Abstract Background Suicide is the leading contributor to mortality in bipolar disorder (BD). A history of suicidal attempt is a robust predictive marker for future suicide attempts. Personality profiles and coping strategies are the areas of contemporary research in bipolar suicides apart from clinical and demographic risk factors. However, similar research in developing countries is rarer. Objectives The present study aimed to identify the risk factors associated with suicidal attempts in BD type I (BD-I). Materials and Methods Patients with BD-I currently in clinical remission (N = 102) were recruited. Sociodemographic details and the clinical data were collected using a semistructured pro forma. The psychiatric diagnoses were confirmed using the Mini-International Neuropsychiatric Interview 5.0. The National Institute of Mental Health–Life Chart Methodology Clinician Retrospective Chart was used to chart the illness course. Presumptive Stressful Life Events Scale, Coping Strategies Inventory Short Form, Buss–Perry aggression questionnaire, Past Feelings and Acts of Violence, and Barratt Impulsivity scale were used to assess the patient’s stress scores, coping skills, aggression, violence, and impulsivity, respectively. Statistical Analysis Descriptive statistics were used for demographic details and characteristics of the illness course. Binary logistic regression analyses were performed to identify the predictors for lifetime suicide attempt in BD-I. Results A total of 102 patients (males = 49 and females = 53) with BD-I were included. Thirty-seven subjects (36.3%) had a history of suicide attempt. The illness course in suicide attempters more frequently had an index episode of depression, was encumbered with frequent mood episodes, especially in depression, and had a higher propensity for psychiatric comorbidities. On binary logistic regression analysis, the odds ratios (ORs) for predicting a suicide attempt were highest for positive family history of suicide (OR: 13.65, 95% confidence interval [CI]: 1.28–145.38, p = 0.030), followed by the presence of an index depressive episode (OR: 6.88, 95% CI: 1.70–27.91, p = 0.007), and lower scores on problem-focused disengagement (OR: 0.72, 95% CI: 0.56–0.92, p = 0.009). Conclusion BD-I patients with lifetime suicide attempt differ from non-attempters on various course-related and temperamental factors. However, an index episode depression, family history of suicide, and lower problem-focused engagement can predict lifetime suicide attempt in patients with BD-I.

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Clinical Factors Associated with the Diagnosis of Granulomatosis with Polyangiitis

Otolaryngology ◽

10.1177/0194599816685696 ◽

2017 ◽

Vol 156 (3) ◽

pp. 484-488 ◽

Cited By ~ 4

Author(s):

Erdem Eren ◽

Toygar Kalkan ◽

Seçil Arslanoğlu ◽

Mustafa Özmen ◽

Kazım Önal ◽

...

Keyword(s):

Logistic Regression ◽

Regression Analysis ◽

Nasal Mucosa ◽

Odds Ratio ◽

Granulomatosis With Polyangiitis ◽

Univariate Analysis ◽

Binary Logistic Regression ◽

Binary Logistic Regression Analysis ◽

Significant Difference ◽

History Of

Objective To determine the predictive value of nasal endoscopic findings and symptoms in the diagnosis of granulomatosis with polyangiitis (GPA). Study Design A cross-sectional study. Setting A tertiary university hospital. Subjects and Methods A total of 116 adults were enrolled in the study: 19 patients with GPA, 29 patients with other rheumatic diseases, and 68 healthy volunteers. All patients were examined with a flexible endoscope, and nasal endoscopic images were recorded and evaluated blindly. The medical history of each patient was taken by a physician blinded to the patient’s diagnosis. Results Univariate analysis indicated a statistically significant difference in rhinorrhea ( P = .002), postnasal drip ( P = .015), epistaxis ( P < .001), and saddle nose ( P = .017). However, binary logistic regression analysis demonstrated that only history of epistaxis ( P = .012; odds ratio, 5.6) was statistically significant in predicting GPA. Univariate analysis showed a statistically significant difference in nasal secretion ( P = .028), nasal septal perforation ( P < .017), nasal crusting ( P < .001), nasal adhesion ( P < .001), nasal granuloma ( P = .017), and hemorrhagic fragile nasal mucosa ( P < .001). A binary logistic regression analysis demonstrated that only hemorrhagic fragile nasal mucosa ( P < .001; odds ratio, 52.9) was a statistically significant predictor of GPA. Conclusions Given the results of this study, we believe that hemorrhagic fragile nasal mucosa and history of recurrent epistaxis may put patients at risk for GPA and should be investigated accordingly.

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Risk Factors for Silent Cerebral Infarcts in a Pediatric Sickle Cell Anemia (SCA) Cohort

Blood ◽

10.1182/blood.v112.11.2487.2487 ◽

2008 ◽

Vol 112 (11) ◽

pp. 2487-2487 ◽

Cited By ~ 1

Author(s):

Francoise Bernaudin ◽

Suzanne Verlhac ◽

Annie Kamdem ◽

Cécile Arnaud ◽

Lena Coïc ◽

...

Keyword(s):

Risk Factors ◽

Logistic Regression ◽

Regression Analysis ◽

Risk Factor ◽

Logistic Regression Analysis ◽

G6pd Deficiency ◽

Significant Risk ◽

Significant Risk Factor ◽

History Of ◽

Independent Risk Factors

Abstract Background Silent infarcts are associated with impaired cognitive functioning and have been shown to be predictors of stroke (Miller ST J Pediatr 2001). Until now, reported risk factors for silent infarcts were low pain event rate, history of seizures, high leukocyte count and Sen bS haplotype (Kinney TR Pediatrics 1999). Here, we seek to define the prevalence and risk factors of silent infarcts in the Créteil SCA pediatric cohort comprising patients assessed at least yearly by transcranial doppler (TCD) since 1992, and by MRI/MRA. Methods This study retrospectively analyzed data from the Créteil cohort stroke-free SS/Sb0 children (280; 134 F, 146 M), according to institutional review board. Time-averaged mean of maximum velocities higher than 200 cm/sec were considered as abnormal, resulting in initiation of a transfusion program (TP). A switch to hydroxyurea was proposed to patients with normalized velocities (< 170 cm/sec) and normal MRA on TP, although TP was re-initiated in case of abnormal velocities recurrence. Patients with “conditional” velocities (170–199 cm/sec) were assessed by TCD 4 times yearly. Alpha genes and beta-globin haplotypes were determined. Baseline biological parameters (G6PD activity; WBC, PMN, Reticulocytes, Platelets counts; Hemoglobin, Hematocrit, HbF, LDH levels; MCV; SpO2) were obtained a minimum of 3 months away from a transfusion, one month from a painful episode, after 12 months of age, before the first TCD, and always before therapy intensification. Results. Patients were followed for a total of 2139 patient-years. Alpha-Thal was present in 114/254 patients (45%) and 27/241 (11.2%) had G6PD deficiency. Beta genotype, available in 240 patients, was BaBa in 102 (42.5%), BeBe in 54 (22.5%), SeSe in 19 (7.9%) and “other” in 65 (27.1%); TCD was abnormal in 52 of 280 patients (18.6%). MRA showed stenoses in 30 of 226 evaluated patients (13.3%) while MRI demonstrated presence of silent infarcts in 81/280 patients (28.9%). Abnormal TCD (p<0.001), G6PD deficiency (p=0.008), high LDH (p=0.03), and low Hb (p=0.026) were significant risk factors for stenoses by univariate analysis while multivariate analysis retained only abnormal TCD as a significant risk factor for stenoses ([OR= 10.6, 95% CI (4.6–24.4)]; p<0.001). Univariate logistic regression analysis showed that the risk of silent infarcts was not related to alpha-Thal, beta genotype, abnormal TCD, WBC, PMN, platelets, reticulocyte counts, MCV, LDH level, HbF %, pain or ACS rates but was significantly associated with stenoses detected by MRA (p<0.001), gender (male; p=0.04), G6PD deficiency (p=0.05), low Hb (p=0.016) and Hct (p=0.012). Multivariate logistic regression analysis showed that gender ([OR= 2.1, 95% CI (1.03–4.27)]; p=0.042), low Hb ([OR= 1.4, 95% CI (1.0–1.1)]; p=0.05) and stenoses ([OR= 4.8, 95% CI (1.88–12.28)]; p=0.001) were all significant independent risk factors for silent infarcts. The presence of stenoses was the only significant risk factor for silent infarcts in patients with a history of abnormal TCD ([OR= 5.9, 95% CI (1.6–21.7)]; p=0.008). Conclusion We recently showed that G6PD deficiency, absence of alpha-Thal, and hemolysis are independent significant risk factors for abnormal TCD in stroke-free SCA patients (Bernaudin et al, Blood, 2008, in press). Here, we report that an abnormal TCD is the most significant risk factor for stenoses and, expanding previous studies, we demonstrate that stenoses, low Hb and gender are significant independent risk factors for silent infarcts.

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AFP and CA-125 as an accurate risk factor to predict eye metastasis in hypertension patients with liver Carcinoma： A STROBE-compliant article

10.21203/rs.3.rs-754934/v1 ◽

2021 ◽

Author(s):

Jing Tang ◽

Li-Juan Zhang ◽

Yan-Cheng Huang ◽

Rong Huang ◽

Hui-Ye Shu ◽

...

Keyword(s):

Logistic Regression ◽

Liver Cancer ◽

Cancer Metastasis ◽

Binary Logistic Regression ◽

Receiver Operating Curve ◽

Ca 125 ◽

Liver Carcinoma ◽

Binary Logistic Regression Analysis ◽

History Of ◽

Ocular Metastasis

Abstract Purpose Primary liver carcinoma is a common malignant tumor. In this study, we analyzed the differences between hypertension patients with ocular metastasis of liver cancer and those with metastases to other sites, the correlation between history of HBV and liver cancer metastasis, and independent risk factors for ocular metastasis. METHODS We used treatment records from 488 patients with metastases of primary liver cancer from August 2001 to May 2015, divided into two groups based on metastatic sites: OM (ocular metastasis) and NOM (non-ocular, other sites of metastasis) groups. The Student’s t-test and Chi-square test were used to assess the significance of differences between the groups and define the relationship between history of HBV and ocular metastasis of liver cancer. Binary logistic regression analysis was used to identify indicators of ocular metastasis of liver cancer and receiver operating curve (ROC) analyses to estimate their diagnostic value. RESULTS No significant differences in sex, age, tumor stage, pathological type, or treatment were identified between the OM and NOM groups, while the prevalence of HBV was higher in the former than that in latter, confirming the association between history of HBV and ocular metastasis. Binary logistic regression demonstrated that AFP and CA-125 were independent indicators of liver metastasis (both P < 0.001). ROC curve analyses generated cut-off values for AFP and CA-125 of 957.2 ng/ml and 114.25 U/ml, respectively, with corresponding AUC values of 0.739 and 0.810. The specificity of the combination of AFP and CA-125 was higher than either factor separately.

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Serum markers change for intraocular metastasis in renal cell carcinoma

Bioscience Reports ◽

10.1042/bsr20203116 ◽

2021 ◽

Author(s):

Tie Sun ◽

Jing Tang ◽

Yi-Cong Pan ◽

Chen-Yu Yu ◽

Biao Li ◽

...

Keyword(s):

Risk Factors ◽

Renal Cell Carcinoma ◽

Logistic Regression ◽

Regression Analysis ◽

Risk Factor ◽

Cell Carcinoma ◽

Renal Cell ◽

Binary Logistic Regression ◽

Binary Logistic Regression Analysis ◽

Intraocular Metastasis

Objective: Intraocular metastasis(IOM) of renal cell carcinoma is rare. In this study, we studied the relationship between different biochemical indicators and the occurrence of IOM in renal cancer patients, and identified the potential risk factors. Methods: A retrospective analysis of the clinical data of 214 patients with renal cell carcinoma from October 2001 to August 2016. Analyze the difference and correlation of various indicators between the two groups with or without IOM, and use binary logistic regression analysis to explore the risk factors of IOM in renal cancer patients. Calculate the diagnostic value of each independent related factor according to the receiver operating curve (ROC). Results: The level of neuron specific enolase （NSE） in renal cell carcinoma patients with IOM was significantly higher than that in patients without IOM (P < 0.05). There was no significant difference in ALP, Hb, serum calcium concentration, AFP, CEA, CA-125 etc. between IOM group and non-intraocular metastasis (NIOM) group (P > 0.05). Binary logistic regression analysis showed that NSE was an independent risk factor for IOM in renal cell carcinoma patients (P < 0.05). ROC curve shows that the factor has high accuracy in predicting IOM, and the area under the curve is 0.774. The cut-off value of NSE was 49.5U/L, the sensitivity was 72.2%, and the specificity was 80.1%. Conclusion：NSE concentration is a risk factor for IOM in patients with renal cell cancer. If the concentration of NSE in the patient's body is ≥49.5U/L, disease monitoring and eye scans should be strengthened.

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Changes in Cognitive Function and Risk Factors for Cognitive Impairment of the Elderly in China: 2005–2014

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph16162847 ◽

2019 ◽

Vol 16 (16) ◽

pp. 2847 ◽

Cited By ~ 9

Author(s):

Qilin Zhang ◽

Yanli Wu ◽

Tiankuo Han ◽

Erpeng Liu

Keyword(s):

Risk Factors ◽

Logistic Regression ◽

Regression Analysis ◽

Cognitive Impairment ◽

Cognitive Function ◽

Logistic Regression Analysis ◽

Binary Logistic Regression ◽

The Elderly ◽

Binary Logistic Regression Analysis ◽

Chinese Elderly

Background: The cognitive function of the elderly has become a focus of public health research. Little is known about the changes of cognitive function and the risk factors for cognitive impairment in the Chinese elderly; thus, the purposes of this study are as follows: (1) to describe changes in cognitive function in the Chinese elderly from 2005–2014 and (2) to explore risk factors for cognitive impairment of the Chinese elderly. Design and setting: A total of 2603 participants aged 64 years and above participated in the Chinese Longitudinal Healthy Longevity Survey (CLHLS) and were followed up from 2005 to 2014. Cognitive function and cognitive impairment were assessed using the Chinese version of the Mini-Mental State Examination (MMSE). Binary logistic regression analysis was used to estimate the odds ratio (OR) and 95% confidence intervals (CI) of cognitive impairment. Results: Results revealed that the cognitive function of the Chinese elderly shows diversified changes: deterioration (55.09%), unchanged (17.21%) and improvement (27.70%). In addition, there are significant demographic differences in gender, age, education, marriage and other aspects when it comes to the changes of cognitive function in Chinese elderly. In the binary logistic regression analysis, female, increased age, lower education level, no spouse, less income, worse PWB (psychological well-being), less fresh fruit and vegetable intake, more activities of daily living (ADL) limitations, lower social engagement were significantly associated with higher odds for cognitive impairment. Conclusions: Various interventions should be implemented to maintain cognitive function in Chinese elderly.

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Brain Metastases in Lung Cancer Patients: Clinical Potential Risk Factors of CYFRA21-1 and CEA

10.21203/rs.3.rs-464847/v1 ◽

2021 ◽

Author(s):

Jing Tang ◽

Tie Sun ◽

Qian-Min Ge ◽

Rong-Bin Liang ◽

Ting Su ◽

...

Keyword(s):

Risk Factors ◽

Lung Cancer ◽

Logistic Regression ◽

Regression Analysis ◽

Brain Metastasis ◽

Brain Metastases ◽

Cancer Patients ◽

Binary Logistic Regression ◽

Binary Logistic Regression Analysis ◽

Lung Cancer Patients

Abstract Background At present, little is known about the specific risk factors of brain metastasis in patients with lung cancer. This study aims to explore the risk factors of brain metastasis. Methods From April 1999 to July 2017, a total of 1,615 lung cancer patients were included in this retrospective study. The patients were divided into two groups, namely brain metastasis group and non-brain metastasis group. Student's t test, non-parametric rank sum test and chi-square test were used to describe whether there is a significant difference between the two groups. We compared the serum biomarkers of the two groups of patients, including alkaline phosphatase (ALP), Calcium, calcium hemoglobin (HB), alpha fetoprotein (AFP), cancer embryonic antigen (CEA), CA-125, CA-199, CA- 153, CA-724, cytokeratin fragment 19 (CYFRA 21 − 1), total prostate specific antigen (TPSA), squamous cell carcinoma antigen (SCC-Ag) ,and neuron specific enolase (NSE). Binary logistic regression analysis was used to determine its risk factors, and receiver operating curve (ROC) analysis was used to evaluate its diagnostic value for brain metastases in patients with lung cancer. Results In the analysis of brain metastases in patients with lung cancer, binary logistic regression analysis showed that CYFRA21-1 and CEA are independent risk factors for brain metastases in patients with lung cancer (both P < 0.001). The sensitivity and specificity of diagnosing brain metastasis were CYFRA21-1, 38.0% and 87.4%, respectively; CEA was 39.7% and 79.3%, respectively. Conclusion Serum CYFRA21-1 and CEA have predictive value in the diagnosis of brain metastases in patients with lung cancer.

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Asphyxia and Neonatal Respiratory Distress Syndrome Are Independent Predictors of the Non-response to Inhaled Nitric Oxide in the Newborns With PPHN

Frontiers in Pediatrics ◽

10.3389/fped.2021.665830 ◽

2021 ◽

Vol 9 ◽

Author(s):

Yuwei Zhao ◽

Lei Liang ◽

Guanghui Liu ◽

Hong Zheng ◽

Liying Dai ◽

...

Keyword(s):

Nitric Oxide ◽

Risk Factors ◽

Pulmonary Hypertension ◽

Logistic Regression ◽

Regression Analysis ◽

Distress Syndrome ◽

Binary Logistic Regression ◽

Binary Logistic Regression Analysis ◽

Neonatal Respiratory Distress ◽

Independent Risk Factors

Aim: Not all the neonates respond with improvement in oxygenation following inhaled nitric oxide treatment (iNO) treatment. The aim of this study was to assess the independent risk factors associated with non-response to iNO during the 2 weeks of postnatal treatment in neonates diagnosed with persistent pulmonary hypertension (PPHN).Materials and Methods: This retrospective cohort study included all newborns with PPHN who received iNO treatment for more than 24 h. Demographic, obstetric, perinatal data and clinical complications were extracted from the hospitalization records. Subjects were divided into two groups according to their response to iNO inspiration during the first 24 h of iNO treatment. No response was defined as an increase in SpO2 < 5% or the inability to sustain saturation levels in the first 24 h of iNO treatment. For descriptive statistics, χ2 and t-test analysis were used to compare categorical and continuous variables between the two groups. To evaluate independent risk factors of non-responsiveness to iNO treatment, binary logistic regression analysis were performed.Results: A total of 75 newborns were included in the study. Sixty-two cases were in the responders group, and 13 cases were in the non-responders group. Univariate analysis showed that asphyxia, neonatal respiratory distress syndrome (NRDS), pulmonary surfactant administration, meconium aspiration syndrome (MAS), the severity of pulmonary hypertension (PH), and high-frequency oscillatory ventilation (HFOV) therapy were the high-risk factors affecting the response to iNO treatment in the newborns with PPHN. The binary logistic regression analysis indicated that asphyxia and NRDS incidence were independent predictors of non-responsiveness to iNO treatment [asphyxia: OR 4.193, 95% CI 1.104–15.927, P = 0.035; NRDS: OR 0.154, 95% CI 0.036–0.647, P = 0.011]. The patients in the non-responders group had shorter iNO inspiration followed by MV duration, supplemental oxygen and hospital stay, and higher mortality. There were no significant differences in IVH, PVL, and BPD between two groups.Conclusion: In the newborns with PPHN, asphyxia and NRDS resulted as the independent risk factors of non-responsiveness to iNO therapy. Asphyxia in the newborns with PPHN is detrimental to the response to iNO treatment, while NRDS is beneficial.

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