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Jonas DE, Crotty K, Yun JDY, et al. Screening for Prediabetes and Type 2 Diabetes Mellitus: An Evidence Review for the U.S. Preventive Services Task Force [Internet]. Rockville (MD): Agency for Healthcare Research and Quality (US); 2021 Aug. (Evidence Synthesis, No. 207.)

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Screening for Prediabetes and Type 2 Diabetes Mellitus: An Evidence Review for the U.S. Preventive Services Task Force [Internet].

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Table 4Main Results of Studies Evaluating Screening for Diabetes That Reported Health Outcomes (KQ 1)*

Author, Year

Trial Name

Diagnosis of DM, No.

Mortality

G1 vs. G2; HR (95% CI)

CVD Events

G1 vs. G2; OR, or RR, (95% CI)

Quality of Life

G1 vs. G2

Echouffo-Tcheugui, 201536

ADDITION-Cambridge, 7-year followup

G1: 466

G2: NR

NR

7 years

CVD events (MI or stroke), self-reported: 142 (12.4%) vs. 67 (13.5%), OR, 0.90 (0.71 to 1.15)

SF-8 physical health summary score, mean (SD): 47.8 (9.8) vs. 47.8 (10.3). Beta −0.33 (95% CI, −1.80 to 1.14)

SF-8 mental health summary score, mean (SD): 51.8 (8.6) vs. 52.2 (8.1). Beta −0.38 (95% CI, −1.33 to 0.57)

EQ-5D score, mean (SD): 0.87 (0.16) vs. 0.87 (0.15). Beta 0.002 (95% CI, −0.02 to 0.02)

EuroQol visual acuity score, mean (SD): 74.5 (16.5) vs. 73.7 (17.2). Beta 0.80 (95% CI, −1.28 to 2.87)

Rahman, 201238

Ely, diabetic subgroup

Total: 199

G1: 116 (108 screen detected)

G2: 83 (26 screen detected).

G1: 0

G2: 0

Evaluation was limited to those diagnosed with diabetes who attended health assessment

Self-reported MI: 7/92 vs. 8/60, p=0.29; RR, 0.57 (0.22 to 1.49)

Self-reported stroke: 3/92 vs. 5/60, p=0.19; RR, 0.39 (0.10 to 1.58)

Clinical ischemic heart disease: 18/92 vs. 8/60, p=0.32

ECG-confirmed ischemic heart disease: 30/92 vs. 28/60, p=0.11; RR, 0.70 (0.47 to 1.04)

Peripheral vascular disease:# 5/92 vs. 2/60, p=0.55; RR, 1.63 (0.33 to 8.13)

Mean SF-36§ physical function score: 67.2 (SD, 29.4) vs. 69.6 (SD 30.7); p=0.64

Mean SF-36 mental health score: 77.8 (SD, 16.5) vs. 79.7 (SD, 16.1); p=0.47

Mean EQ-5D visual analog scale (95% CI): 78 (65 to 85) vs. 79.5 (60 to 88), p=0.68

Rahman, 201239

Ely, nondiabetic subgroup

G1: 0

G2: 0

G1: 0

G2: 0

Evaluation was limited to those not diagnosed with diabetes who attended health assessment

Self-reported MI: 28/731 vs. 29/711, p=0.9

Self-reported stroke: 13/731 vs. 12/711, p=0.7

Clinical ischemic heart disease: 78/731 vs. 53/711, p=0.2

Median (IQR) SF-36** physical function score: 90 (75-95) vs. 90 (75-95); p=0.4

Median (IQR) SF-36 mental health score: 84 (68-92) vs. 84 (68-92); p=0.8

Mean EQ-5D visual analog scale (95% CI): 78.3 (77.2 to 79.4) vs. 77.7 (76.5 to 79.0), p=0.9

Simmons 201235

ADDITION-Cambridge

G1: 466

G2: NR

10 years

All-cause mortality: 1,532 vs. 377; 1.06 (0.90 to 1.25)††

Cardiovascular mortality: 482 vs. 124; 1.02 (0.75 to 1.38)

Cancer mortality: 697 vs. 169; 1.08 (0.90 to 1.30)

Other mortality: 353 vs. 84; 1.10 (0.87 to 1.39)

Diabetes-related mortality: 75 vs. 16; 1.26 (0.75 to 2.10)

NRNR

Simmons, 201137

Ely

G1: 51, 26, and 31 in first, second, and third rounds of screening, respectively

G2: NR

Phase 1: 345 total deaths from 1991 to 1999, median 10-year followup (47,854 person-years)

All-cause mortality: 116 vs. 229, 0.96 (0.77 to 1.20); adjusted‡‡ 0.79 (0.63 to 1.00)§§

Cancer-related mortality: 52 vs. 107; CVD mortality 41 vs. 74; other mortality 23 vs. 48

Phase 2: 291 total deaths from 2000 to 2008, median 8.1 y (23,144 person-years)

All-cause mortality: 165 vs. 126, 1.20 (0.95 to 1.51); adjusted‡‡ 1.18 (0.93 to 1.51)§§

Cancer-related mortality 44 vs. 47; CVD mortality 68 vs. 43; other mortality 53 vs. 36

NRNR
*

None of the included studies reported on amputations, skin ulcers, visual impairment, or periodontitis.

SF-8 scale ranges from 0 to 100 for each summary score.

Beta coefficients represent the mean difference between groups.

§

Medical Outcomes Study Short Form Health Survey, scale 0-100. Higher scores indicate better function.

Based on Rose angina questionnaire score >3.

Defined by Minnesota coding of ECG.

#

Defined as ABPI <0.9, for which the article reports 90% sensitivity and specificity among in symptomatic disease. The article did not report whether any of these persons had symptoms of PVD.

**

Medical Outcomes Study Short Form Health Survey, scale 0-100. Higher scores indicate better function.

††

Among G1 (the screening group), nonattenders had higher all-cause mortality than attenders: HR 2.01 (1.74 to 2.32) and were younger, more obese, more likely to be men, and less likely to be taking antihypertensive medications.

‡‡

Adjusted for age, sex, and deprivation (determined using the Townsend Index, which was calculated using postcodes to determine material deprivation based on four factors derived from the 1991 UK census: unemployment, overcrowding, car ownership, and home ownership).

§§

For phase 1, comparing those who attended screening vs. controls (G1-a vs. G2), the HR for all-cause mortality was 0.64 (0.47 to 0.86) and the adjusted HR was 0.54 (0.40 to 0.74). Comparing those who did not attend screening vs. controls (G1-b vs. G2), the HR for all-cause mortality was 1.68 (1.27 to 2.22) and the adjusted HR was 1.36 (1.01 to 1.82). For phase 2, comparing those who attended screening vs. controls (G1-a vs. G2), the HR for all-cause mortality was 0.46 (0.31 to 0.69) and the adjusted HR was 0.52 (0.35 to 0.78). Comparing those who did not attend screening vs. controls (G1-b vs. G2), the HR for all-cause mortality was 1.85 (1.45 to 2.36) and the adjusted HR 1.73 (1.34 to 2.24).

Abbreviations: ABPI=Ankle-brachial pressure index; ADDITION=Anglo-Danish-Dutch Study of Intensive Treatment In People with Screen Detected Diabetes in Primary Care; CI=confidence interval; CVD=cardiovascular disease; DM=diabetes mellitus; ECG=electrocardiogram; EQ-5D=EuroQol Research Foundation and LimeSurvey; G=group; HR=hazard ratio; IQR=interquartile range; KQ=key question; MI=myocardial infarction; No.=number; NR=not reported; OR=odds ratio; PVD=peripheral vascular disease; RR=relative risk; SD=standard deviation; SF-8=Short Form-8 questionnaire; SF-36=Short Form-36 questionnaire; U.K.=United Kingdom; vs.=versus.

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