1 l of 661 patients-the remaining studies were
observational.
2 Observational analysis based on interim data from 16 rur
3 Observational analysis of Get With The Guidelines-HF reg
4 CVD-REAL Nordic was an
observational analysis of individual patient-level data
5 The corresponding estimate from
observational analysis was 1.43 (95% CI, 1.19-1.67; P-va
6 In a retrospective
observational analysis, we compared oral fluid OraQuick
7 Grading of written descriptions for
observational and descriptive abilities by reviewers usi
8 Both
observational and experimental studies suggest a strong
9 Here we combine
observational and experimental studies to test this hypo
10 Here, we provide both
observational and experimental support of critical slowi
11 Both
observational and interventional trials reporting on the
12 Observational and longitudinal study.
13 The Baby
Observational and Nutrition Study (BONUS), a multicenter
14 demonstrate significant correlations to both
observational and proxy records of sea-ice variability,
15 Observational associations between red meat intake and c
16 Prospective
observational before-after cohort study.
17 Observational case review.
18 This
observational case series was conducted from March 1 to
19 This
observational case series, conducted from July 1, 2012,
20 Retrospective
observational case series.
21 Prospective,
observational case series.
22 A prospective, consecutive,
observational case series.
23 Retrospective,
observational case series.
24 This
observational case-control study enrolled patients from
25 MATERIALS AND This was an
observational case-control, questionnaire-based study in
26 We performed a prospective,
observational clinical study to determine if ultra-widef
27 Blinded, prospective multicenter
observational clinical trial following an Food and Drug
28 A prospective, longitudinal,
observational,
clinicoelectrophysiological and radiologi
29 Observational cohort analysis of geocoded longitudinal e
30 mples were collected from participants in an
observational cohort enrolled at five sites in Australia
31 Observational cohort of LTBI patients receiving 3HP thro
32 nd Coronary Prevention Study]; n=4910) and 2
observational cohort studies (CARDIA [Coronary Artery Ri
33 This investigation was an
observational cohort study at inpatient and ambulatory s
34 This prospective
observational cohort study enrolled a consecutive sample
35 Observational cohort study from June 1, 2010, to Septemb
36 A prospective
observational cohort study in the ICU of two tertiary ho
37 Materials and Methods This prospective
observational cohort study included 123 consecutive pati
38 An
observational cohort study included 7423 members of Kais
39 A prospective,
observational cohort study of 221 HIV-infected men under
40 A retrospective
observational cohort study of 991 Oregon residents who h
41 Cardiovascular Conditions) is a longitudinal
observational cohort study of patients with conditions t
42 This was a single-center,
observational cohort study of patients with newly diagno
43 This was a prospective
observational cohort study that included consecutive pat
44 In response, we conducted an
observational cohort study to assess the effects of pre-
45 nical isolates collected in a multinational,
observational cohort study to determine if there was an
46 This prospective
observational cohort study was conducted at the Visual P
47 A prospective
observational cohort study was conducted in 302 human im
48 In this
observational cohort study, beneficiaries and their phys
49 In a large prospective
observational cohort study, direct-acting antiviral ther
50 In this
observational cohort study, inpatient gastrointestinal s
51 Study (BONUS), a multicenter, longitudinal,
observational cohort study, was conducted during regular
52 In this retrospective,
observational cohort study, we compared time to any adve
53 In this
observational cohort study, we enrolled patients with id
54 In this
observational cohort study, we evaluated P. falciparum p
55 Prospective single-center
observational cohort study.
56 Multicenter, retrospective,
observational cohort study.
57 Retrospective,
observational cohort study.
58 Observational cohort study.
59 sity between 2002 and 2015 and studied in an
observational cohort study.
60 A single-center, retrospective,
observational cohort study.
61 Prospective
observational cohort.
62 Consecutive-sample
observational cohort.
63 nd Canadian Cancer Trials Group LY.12) and 2
observational cohorts (MD Anderson Cancer Center and Uni
64 Observational cohorts that assessed the association of s
65 ies toward the Atlantic sector, with lack of
observational constraints for the extensive Russian Sibe
66 with optical microscopy and provides little
observational contrast for other methods.
67 Black and white men and women from the
observational Coronary Artery Risk Development in Young
68 Observational cross-sectional mixed-methods study.
69 Observational,
cross-sectional case series at a referral
70 Observational,
cross-sectional study.
71 However,
observational data are prone to confounding and reverse
72 Estimation of causal effects using
observational data continues to grow in popularity in th
73 Review, we discuss how a recent increase in
observational data for this trace metal has challenged t
74 We report
observational data from four communities in Zambia to as
75 We used cross-sectional
observational data from UK Biobank.
76 Observational data in this area are conflicting, and the
77 tations of the study include the reliance on
observational data in which gestational age is recorded
78 s continentally by relating experimental and
observational data of drought-induced mortality across t
79 ning may outperform parametric regression in
observational data settings.
80 In contrast, the
observational data suggested that insufficient informati
81 Observational data suggests that interarterial ALCA is r
82 base for these devices had consisted only of
observational data, meta-analyses, and small feasibility
83 Given the limitations of
observational data, randomized trials are needed to dete
84 s the model that is most consistent with the
observational data.
85 necessary to fully extract physics from the
observational data.
86 Testing strategies were evaluated using an
observational design during a 9-month period (June 1, 20
87 e inability to establish causal links due to
observational design, and the absence of health outcomes
88 , while also considering the distribution of
observational effort (i.e. number of sampling days recor
89 This
observational evaluation of a prospectively implemented
90 However,
observational evidence confirming the action of MICI has
91 Here we provide
observational evidence for a strong increase in cloud co
92 Although there exists
observational evidence for star formation triggered by o
93 Here, we present
observational evidence for the region's proposed positiv
94 erized prospective cohort provide compelling
observational evidence on associations of vitamin D with
95 Observational evidence suggests that adult body size has
96 Our
observational evidence that higher levels of IGF-1 appea
97 Here we present
observational evidence that rapid deglacial ice-sheet re
98 tend to damp the SST front, here we present
observational evidence that the surface heat loss actual
99 In this study, we report strong
observational evidence, for the first time from long-ter
100 The
observational fear (OF) paradigm in rodents, in which th
101 In this multicentre, prospective,
observational,
first-in-man study, we collected data fro
102 Nonprespecified 7-year
observational follow-up of the Multicenter Uveitis Stero
103 Observational follow-up of US multiethnic postmenopausal
104 ed clinical trial, including a nonrandomized
observational group, conducted at 2 public, high-volume
105 18 of 33 cohorts from the Collaboration of
Observational HIV Epidemiological Research Europe (COHER
106 The parallel between experimental animal and
observational human data lends support to the argument t
107 Observational human studies indicate that although the w
108 Drawing from experimental animal models and
observational human studies, we propose that the psychon
109 des, using a pan-European database from 4262
observational hydrometric stations, and found clear patt
110 Observational intent-to-treat cohort analysis using the
111 These results also provide insight into the
observational learning process by which someone else's c
112 Retrospective
observational longitudinal cohort study.
113 AND We conducted a multinational prospective
observational longitudinal study of fetal growth in low-
114 sk of 30-day readmission was estimated using
observational,
longitudinal data on hospital inpatient d
115 al Infarction Patients' Health Status) is an
observational multicenter cohort study that enrolled 406
116 This was an
observational multicenter study of all consecutive adult
117 Retrospective,
observational,
multicenter case series review.
118 A retrospective,
observational,
multicenter, international study was perf
119 The APRICOT study was a prospective
observational multicentre cohort study of children from
120 Because the associations reported are
observational,
no conclusions can be made regarding caus
121 g graft at 2 years consented to enroll in an
observational,
noninterventional extension study to coll
122 A total of 2,764,731 participants from
observational (
OB) studies and 9,999 from randomized con
123 tudies were randomized controlled trials and
observational ones.
124 -level to demographic modelling, grounded in
observational or experimental data, is therefore necessa
125 r, our results emphasize the power of direct
observational or experimental measures of recovery over
126 Inclusion criteria were
observational or randomized studies of septic patients,
127 METHODS AND In the multicenter, prospective,
observational PARIS study (Patterns of Non-Adherence to
128 w larger than the genetic females during the
observational period.
129 ours was relatively stable across the 2-year
observational period.
130 During the
observational phase, remission rates before change of as
131 In a non-interventional,
observational,
post-marketing surveillance study, patien
132 We conducted a retrospective
observational pre-post study of residents in counties wi
133 There was no
observational precedent for this level of rainfall.
134 c arthritis and 1 with uveitis and psoriasis
Observational Procedure: Retrospective chart review.
135 In this
observational prospective study 63 patients undergoing b
136 e report the 12-year follow-up results of an
observational,
prospective study of Roux-en-Y gastric by
137 We performed a multicenter,
observational,
prospective study under conditions of cli
138 , events that are unprecedented in the local
observational record remain a persistent challenge.
139 ching recommendations to enhance the role of
observational research in clinical decision making: (1)
140 information, (3) ensure the use of rigorous
observational research methodologies, (4) promote transp
141 logies, (4) promote transparent reporting of
observational research studies, and (5) protect patient
142 hort study called the Cooperative Huntington
Observational Research Trial (COHORT).
143 The prospective
observational ROADMAP study (Risk Assessment and Compara
144 isual arts on the general and ophthalmologic
observational skills of medical students.
145 students can improve clinical ophthalmology
observational skills.
146 als (with 695 patients with cholera) and six
observational studies (217 patients with cholera) met th
147 Two
observational studies (n = 39211) included cohorts of pe
148 risk, 0.93; 95% CI, 0.77-1.13; I = 0.0%) or
observational studies (odds ratio, 0.90; 95% CI, 0.54-1.
149 d datasets from 4 large-scale cardiovascular
observational studies (PROMETHEUS, ADAPT-DES [the Assess
150 Observational studies almost always have bias because pr
151 From
observational studies among compensated cirrhotic hepati
152 the BP measurement techniques used in major
observational studies and clinical trials that form the
153 Observational studies and experimental evidence agree th
154 review of the evidence from meta-analyses of
observational studies and randomized controlled trials (
155 ate the evidence across 314 meta-analyses of
observational studies and randomized controlled trials o
156 However, conventional
observational studies are prone to bias, such as reverse
157 Observational studies can also answer or inform question
158 Observational studies can generate hypotheses by evaluat
159 en associated with worse patient outcomes in
observational studies compared with patients treated wit
160 searched PubMed and conference abstracts for
observational studies comparing baseline characteristics
161 All randomized controlled trials (RCT) and
observational studies comparing corticosteroid withdrawa
162 analysis of all the propensity score-matched
observational studies comparing the long-term outcomes o
163 Observational studies demonstrate links between patient-
164 ncluded randomized controlled trial data and
observational studies describing experience with percuta
165 rsistent AA receiving omalizumab therapy and
observational studies from the past 7 years of clinical
166 Observational studies have associated patent ductus arte
167 RATIONALE:
Observational studies have found shorter leukocyte telom
168 Previous
observational studies have implied breastmilk fatty acid
169 Small
observational studies have indicated better outcome with
170 Observational studies have reported that black and Hispa
171 Purpose Small
observational studies have shown a survival advantage to
172 Although sparse
observational studies have suggested a link between migr
173 Some
observational studies have suggested that this regimen m
174 n, our study adhered to the Meta-analysis of
Observational Studies in Epidemiology (MOOSE) guidelines
175 Meta-analyses (PRISMA) and Meta-analysis of
Observational Studies in Epidemiology (MOOSE) guidelines
176 of bias) the STrengthening the Reporting of
OBservational studies in Epidemiology (STROBE) checklist
177 Meta-analysis of
Observational Studies in Epidemiology guidelines were fo
178 Prospective
observational studies in many populations showed that lo
179 Observational studies in socioeconomically distinct popu
180 Using long-term
observational studies in the field and common garden and
181 A total of seven
observational studies met the criteria for inclusion (on
182 The QAlb was measured in longitudinal
observational studies of primary HIV infection.
183 Observational studies of the association of alanine amin
184 Observational studies on smoking and risk of hay fever a
185 Observational studies or randomized controlled trials wi
186 Observational studies provide evidence for effects of ma
187 Meta-analysis of
observational studies provided evidence of a protective
188 review of randomized, controlled trials and
observational studies published through December 2015 on
189 ses for non-randomised quasi-experimental or
observational studies reporting invasive pneumococcal di
190 stematically searched on August 31, 2015 for
observational studies reporting survival to hospital dis
191 d randomized clinical trials and prospective
observational studies reporting visual acuity (VA) in no
192 Observational studies suggest an inverse association bet
193 Observational studies suggest associations of triglyceri
194 ch as cisplatin, to impair tumor growth, and
observational studies suggest that statins combined with
195 Observational studies suggest that symptomatic atheroscl
196 After a single-center trial and
observational studies suggesting that early, goal-direct
197 When
observational studies that did not control for baseline
198 , meta-analyses, interventional studies, and
observational studies that had morbidity and mortality o
199 , 2016, for randomised controlled trials and
observational studies that reported estimates of direct
200 causation and/or unmeasured confounding from
observational studies to lead to associations that are n
201 From 307 results, fourteen
observational studies totaling 3549 patients were analyz
202 The quality of 3 included
observational studies was moderate.
203 trial, 3 quasi-experimental studies, and 40
observational studies were identified.
204 Patients from continued access
observational studies were included for comparison.
205 review, we identified all PubMed reports of
observational studies with PS analysis that evaluated a
206 teria (5 randomized controlled trials and 37
observational studies), involving 62068 patients (median
207 eria for inclusion (6 RCTs and 5 prospective
observational studies).
208 In
observational studies, abdominal adiposity has been asso
209 dings of randomised controlled trials (RCT),
observational studies, and meta-analyses vary regarding
210 Two systematic reviews, 3
observational studies, and no randomized trials were fou
211 zed clinical trials, prospective comparative
observational studies, and retrospective studies publish
212 (SES) is associated with asthma morbidity in
observational studies, but the factors underlying this a
213 examined in the 20 selected meta-analyses of
observational studies, caffeine was associated with a pr
214 se approaches can reduce the risk of bias in
observational studies, none replace the balance of both
215 Together with evidence from
observational studies, our findings further emphasize th
216 Intervention trials and
observational studies, published in English, involving a
217 e strands were most commonly cross-sectional
observational studies, which relied heavily on self-repo
218 PubMed, and Web of Science were searched for
observational studies, without language, time, or qualit
219 is of existing data from previously reported
observational studies.
220 pollen allergen immunotherapy are limited to
observational studies.
221 eir effectiveness has been evaluated only in
observational studies.
222 king because published data consist of small
observational studies.
223 traumatic brain injury has been reported in
observational studies.
224 Observational study and prospective animal trial.
225 anuary 1, 2008, through March 31, 2015, this
observational study applied descriptive (univariate and
226 The prospective
observational study assessed this association among 566
227 This
observational study demonstrated a higher incidence rate
228 our previous results in term neonates, this
observational study demonstrates that second- rather tha
229 nts and Methods A prospective, single-group,
observational study design was used to test the contribu
230 This prospective,
observational study focused on potentially avoidable SIC
231 Prospective, multisite,
observational study following three sequential, independ
232 Observational study from 2002 to 2015 in 5 US locations,
233 We performed a multicenter prospective
observational study in 7 US academic institutions.
234 We performed a retrospective
observational study in adults (>/=18 years of age) diagn
235 This investigation was an
observational study in comprehensive ophthalmology and c
236 We performed a prospective
observational study in patients undergoing elective surg
237 These are the results of a population-based
observational study in Sweden from 1998 to 2012 of 118,5
238 stigation was a cross-sectional, multicenter
observational study in the setting of the HCMNet network
239 Observational study in U.S. pretravel clinics.
240 This was a cross-sectional,
observational study in which adult patients with adult-o
241 An
observational study in which IOP was assessed using Gold
242 This prospective, single-arm,
observational study includes cohort of patients with cir
243 In a multicenter prospective
observational study involving 6 hospitals in 4 countries
244 The Icatibant Outcome Survey (IOS) is an
observational study monitoring safety and effectiveness
245 ting ICH Growth) is a preplanned prospective
observational study nested in the Antihypertensive Treat
246 of glucose metabolism were investigated in a
observational study of 102 postmenopausal, HR + HER2- me
247 In a prospective
observational study of 120 children who were receiving i
248 Retrospective
observational study of 1996 adult first kidney transplan
249 Prospective
observational study of 424 trauma patients admitted to a
250 Retrospective
observational study of 94474 patients with acute ischemi
251 This multicenter, prospective,
observational study of a quality improvement program stu
252 n the Jackson Heart Study, a community-based
observational study of cardiovascular risk in black adul
253 This was an
observational study of factors associated with primary t
254 We performed an
observational study of laughter during seminaturalistic
255 This is an
observational study of MINOCA patients recorded in the S
256 atterns of Care study was a population-based
observational study of physicians' reported treatment of
257 A prospective
observational study of preterm infants (birth weight <15
258 In this
observational study of the 1082 studies published using
259 participants were recruited from the SCOPE (
Observational Study of the Consequences of the Protease
260 This is a before and after
observational study of the impact of this multi-dimensio
261 Framingham Heart Study Offspring cohort, an
observational study of the offspring of the original Fra
262 This large and longitudinal
observational study on the epidemiology of SJS/TEN contr
263 None (
observational study only).
264 was a multinational prospective multicenter
observational study over 3 months of all patients receiv
265 In this prospective,
observational study performed from November 1, 2013, thr
266 This
observational study reviewed 8269 patients with OHCAs (5
267 Reflecting the current clinical dilemma, an
observational study showed that only 63% of the patients
268 observational study that commenced anti-VEGF treatment f
269 s a multicenter, multinational, prospective,
observational study that included patients with worsenin
270 The LUNG SAFE (Large
Observational Study to Understand the Global Impact of S
271 This
observational study used an administrative database to m
272 A prospective,
observational study was carried out, including a conveni
273 A prospective
observational study was conducted at Cipto Mangunkusumo
274 A prospective
observational study was conducted at University Hospital
275 A prospective,
observational study was conducted from January 1 to June
276 A clinical, prospective,
observational study was conducted in patients with giard
277 An
observational study was performed among 64 LTACHs from J
278 A longitudinal
observational study with group matching on age, sex, rac
279 Observational study with group-level analyses.
280 ents enrolled in a prospective, multicenter,
observational study within 3 months after diagnosis of c
281 illance study (a multiregional, prospective,
observational study) and died by 2011.
282 ngle center, retrospective, Cross-sectional,
observational study, 20 volunteers with no retinal disea
283 In this
observational study, cases were defined as subjects aged
284 In this
observational study, patients underwent imaging at Colum
285 In this prospective
observational study, we included children and adolescent
286 In this
observational study, we tested Plasmodium falciparum iso
287 In this cross-sectional, population-based,
observational study, we used two-phase random sampling t
288 verage treatment effect in the context of an
observational study.
289 Cross-sectional, correlational,
observational study.
290 unprotected LMCA PCI in a Swedish nationwide
observational study.
291 in treating cutaneous sarcoidosis in a large
observational study.
292 Cross-sectional, single-center,
observational study.
293 A cross-sectional,
observational study.
294 Retrospective
observational study.
295 Prospective multicenter
observational study.
296 Multicenter prospective
observational study.
297 t cancer were recruited for this prospective
observational study.
298 his fingerprint that is mirrored in multiple
observational surface temperature datasets.
299 ith data sets, nearly all of which have been
observational,
that are larger and more diverse and that
300 Prospective
observational trial with systematic dysphagia screening