CC BY-NC-ND 4.0 · J Lab Physicians 2021; 13(01): 036-043
DOI: 10.1055/s-0041-1727557
Original Article

Comparative Assessment of ADA, IDRS, and FINDRISC in Predicting Prediabetes and Diabetes Mellitus in South Indian Population

Parveen Doddamani
1   Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Bannimantap, Mysuru, Karnataka, India
,
Nitin Ramanathan
1   Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Bannimantap, Mysuru, Karnataka, India
,
N. K. Swetha
1   Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Bannimantap, Mysuru, Karnataka, India
,
M. N. Suma
1   Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Bannimantap, Mysuru, Karnataka, India
› Institutsangaben
 

Abstract

Introduction Diabetes risk-screening tools are validated and implemented across various countries. There is a need for improvement in these risk scores with suitable modifications so as to make them more sensitive, specific, and suitable to the local population.

Objectives The aim of this study was to evaluate and compare the diagnostic accuracy and clinical utility of the Indian diabetes risk score (IDRS), the American diabetic association (ADA) risk score, and the Finnish Diabetes Risk Score in healthy subjects of South Indian origin in predicting the risk of diabetes and to correlate these risk scores with the blood glucose and hemoglobin A1c (HbA1c) levels in the study population.

Materials and Methods A total of 160 subjects attending the master health checkup/outpatient department of a tertiary care hospital were included in the study. Each subject was asked to fill a questionnaire. Details obtained using the questionnaire were assessed as per the three diabetic risk scores. Fasting blood sugar/random blood sugar and HbA1c were estimated.

Statistical Analysis Used Data analysis was done using SPSS 22/23. Pearson correlation was used to compare continuous variables, with p < 0.05 considered statistically significant. Sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio, negative likelihood ratio, and Mitchell’s clinical utility indices were calculated for each risk tool.

Results We found the prevalence of diabetes to be 11.9%. ADA risk score was the only risk score that showed a statistically significant difference (p-value = 0.05) between the low- and high-risk subjects.

Conclusions ADA or IDRS risk scores can be used for screening diabetes in the South Indian population. We suggest that inclusion of the history of gestational diabetes and hypertension in the IDRS risk score might improve its sensitivity as a screening tool in our local population.


#

Introduction

Diabetes mellitus is rampant in developing countries, and India is named the diabetes capital of the world with the prevalence of 77 million. According to the International Diabetes Federation 2019, the global prevalence of diabetes is 463 million and is expected to increase to 700 million by 2045. The various causes contributing to this exponential increase are multiple risk factors attributing to diabetes mellitus, a prolonged presymptomatic stage in >50% of patients and usually present to the physician with complications and irreversible damage.[1] [2] Hence, early diagnosis and management are important in delaying the progression and complication of the disease, in addition to preventing socioeconomic burden.[3]

Although WHO does not advocate any specific screening programs, it recommends an organization of programs specific to particular regions/countries; this aims at targeting the local population so as to identify persons who are at high risk. Diabetes risk score system using a simple questionnaire utilizing noninvasive variables has been a time-tested and cost-effective screening tool, which can be applied to screen a large population which is still undiagnosed of diabetes mellitus, though increasing evidence suggests risk scores cannot be generalized from one country to another but can be modified as per the requirement of the local population.[4] [5] [6]

The two popular internationally accepted risk scores are the American Diabetes Association (ADA) ([Table 1]) and the Finnish Diabetic Risk Score (FINDRISC) ([Table 2]).[4] [5] [6] In India, Indian Diabetic Risk Score (IDRS), as shown in ([Table 3]) developed by Chennai Urban Rural Epidemiology Study (CURES) cohort study, has been validated across various parts of India and accepted and endorsed by various studies. To our knowledge, there are no studies that have compared these three screening questionnaires in the South Indian population; hence, the comparison is vital. In this study, we aim to screen healthy subjects for the risk of diabetes mellitus type 2 with these three standard risk test questionnaires.[7] [8]

Table 1

American Diabetes Association (ADA) risk score5

Particulars

Score

Risk score: If you scored ≥ 5, you are at an increased risk of having type 2 diabetes. However, only your doctor can tell for sure if you do have type 2 diabetes or prediabetes (a condition that precedes type 2 diabetes, in which blood glucose levels are higher than normal). Talk to your doctor to see if additional testing is needed.

How old are you?

< 40

0

40–49

1

50–59

2

≥ 60

3

Are you a man or a woman?

Man

1

Woman

0

If you are a woman, have you ever been diagnosed with gestational diabetes?

Yes

1

No

0

Do you have a mother, father, sister, or brother with diabetes?

Yes

1

No

0

Have you ever been diagnosed with high blood pressure?

Yes

1

No

0

Are you physically active?

Yes

0

No

1

What is your weight status? Refer the weight chart below

Table 2

Finnish Diabetes Risk Score (FINDRISC)6

Particulars

Points/Score

Risk score: The risk of developing type 2 diabetes within 10 years is:

• < 7 Low: estimated 1 in 100 will develop disease.

• 7–11 Slightly elevated: estimated 1 in 25 will develop disease.

• 12–14 Moderate: estimated 1 in 6 will develop disease.

• 15–20 High: estimated 1 in 3 will develop disease.

• 20 Very high: estimated 1 in 2 will develop disease.

Age (y)

< 45 y

0

45–54 y

2

55–64 y

3

> 64 y

4

Body mass index

< 25 kg/m2

0

25–30 kg/m2

1

> 30 kg/m2

3

Waist circumference measured below the ribs (usually at the level of the navel)

Men

Women

< 94 cm

< 80 cm

0

94–102 cm

80–88 cm

3

> 102 cm

> 88 cm

4

Do you usually have at least 30 minutes of physical activity at work and/or during leisure time (including normal daily activity) daily?

Yes

0

No

2

How often do you eat vegetables, fruit, or berries?

Every day

0

Not every day

1

Have you ever taken medication for high blood pressure on a regular basis?

No

0

Yes

2

Have you ever been found to have high blood glucose (e.g., in a health examination, during an illness, during pregnancy)?

No

0

Yes

5

Have any of the members of your immediate family or other relatives been diagnosed with diabetes (type 1 or type 2)?

No

0

Yes: grandparent, aunt, uncle, or first

cousin (but not own parent, brother, sister,

or child)

3

Yes: parent, brother, sister, or own child

5

Table 3

Indian Diabetes Risk Score (IDRS)8

Particulars

Score

Risk score:

➣ ≥ 60: Very high risk of having diabetes. Oral Glucose Tolerance Test (OGTT) is recommended to rule out diabetes. If this is not possible, at least a random blood sugar/fasting blood sugar should be done.

3050: The risk of having diabetes is moderate. It is still recommended to have the checkup mentioned in the previous point.

➣ < 30: Risk of having diabetes is probably low.

Age (y)

< 35

0

35–49

20

> 50

30

Abdominal obesity

Waist < 80 cm (female), < 90 cm (male)

0

Waist > 80–89 cm (female), > 90–99 cm (male)

10

Waist > 80–89 cm (female), > 90–99 cm (male)

20

Physical activity

Exercise regular + strenuous work

0

Exercise regular or strenuous work

20

No exercise or sedentary work

30

Family history

No family history

0

Either parent

10

Both parents

20

Minimum score

0

Maximum score

100


#

Objectives

  1. To assess and compare the diagnostic utility of IDRS, ADA risk score, and FINDRISC in predicting the risk of diabetes mellitus in healthy subjects of South Indian origin.

  2. To correlate these risk scores with the serum glucose and hemoglobin A1c (HbA1c) levels in healthy subjects of South Indian origin.


#

Materials and Methods

An observational cross-sectional study was conducted for a 3-month duration between March and May 2019 at a tertiary-care teaching Medical College Hospital. The study was approved by the institutional ethical committee. The reported prevalence of diabetes in India is 8.8%.[1] Based on this, the sample size was calculated to be 124, with a precision of 5% and confidence level of 95%. In our study, 160 healthy subjects in the age group of 20 to 70 years, attending the master health checkup (MHC)/outpatient department (OPD), were included using stratified random sampling. Exclusion criteria: known cases of diabetes mellitus type 1 and 2, pregnant females, subjects on steroids or having overt cardiovascular disease (clinical atherosclerosis, atrial fibrillation, heart failure, significant valvular disease), and inability to give informed consent. Method of data collection: All the subjects who provided consent and satisfied the inclusion criteria were requested to answer the questions mentioned in the proforma, which included all the required parameters to fill the three diabetes risk scores: IDRS, ADA risk score, and FINDRISC. Anthropometric measurements were recorded with calibrated instruments according to a standardized protocol. Body mass index (BMI) was measured using the formula: weight (kg) divided by height (m). Further, the criteria for the diagnosis of diabetes mellitus were as follows: fasting plasma glucose ≥ 126 mg/dL or random plasma glucose ≥ 200 mg/dL with clinical features of polyphagia, polyuria, polydipsia, and HbA1c ≥ 6.5%.[9]

Under aseptic precautions, ~3 mL blood was collected in an EDTA vacutainer for analysis of HbA1c (whole blood), and 2 mL blood was collected in a plain red-capped vacutainer (serum was separated by centrifugation at 4000 rpm for 15 minutes) for the estimation of glucose. HbA1c was estimated by ion-exchange high-pressure liquid chromatography method using Biorad D10 hemoglobin system. Glucose was estimated by the hexokinase method using the fully automated Roche Cobas 6000 integrated system.


#

Statistical Analysis

Data analysis was done using SPSS 22/23. Descriptive variables were expressed as mean ± standard deviation for continuous data and as a ratio for categorical data. Pearson correlation was used to compare continuous variables, with p < 0.05 considered statistically significant. The optimum cutoff for IDRS, ADA, and FINDRISC was obtained using receiver operative characteristic curve. Sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio, negative likelihood ratio, and Mitchell’s clinical utility indices (CUIs) were calculated for each risk tool. Agreement between the different scores in predicting the risk of diabetes mellitus was analyzed by using the Bland–Altman approach (B-A plot).


#

Results and Discussion

Screening of population using noninvasive diabetes risk scores helps in early identification of prediabetes and diabetes so that the associated complications can be delayed or prevented through dietary and lifestyle interventions. Different countries have adopted indigenous risk scores pertaining to their population. Comparison and validation of different risk scores in local population help in identifying the gaps in the respective indigenous risk scores so that suitable modifications can be adapted to enhance the sensitivity of the risk score in screening diabetes.

A total of 160 subjects, who attended MHC/OPD, were recruited for the study and the baseline characteristics of the study subjects is represented in [Table 4]. No significant difference was observed in these variables between diabetic and nondiabetic subjects. It was interesting to note that though 58% of subjects complied with the physical activity of > 30 minutes, the number of subjects with normal BMI and those who were overweight was almost equal. It was noted that though > 50% of subjects in the study group were in the overweight or obese category (based on the BMI cutoff for Indian population—overweight: BMI between 23.0 and 24.9 kg/m2; and obese: BMI ≥ 25.0 kg/m), no correlation was observed between BMI and diabetes/HbA1c levels.[10] [11] [12]

Table 4

Baseline characteristics

Sl. no

Parameters

Characteristics

No. of subjects

Percentage

(%)

Abbreviation: BMI, body mass index.

1.

Sex

Male

81

50.6

Female

79

49.4

2.

Age (in y)

< 30

25

15.6

30–39

38

23.8

40–49

52

32.5

50–59

26

16.2

> 60

19

11.9

3.

BMI (kg/m2)

Underweight

(< 18.5)

06

3.8

Normal (18.5–22.9)

66

41.2

Overweight (23.0–24.9)

63

39.4

Obese (≥ 25)

25

15.6

4.

Blood pressure (mm Hg)

< 140/90

141

88.1

> 140/90

19

11.9

5.

Physical activity (min 30 min)

Yes

93

58.1

No

67

41.9

6.

Literacy

Primary

18

11.3

High school

59

36.8

Graduation

63

39.4

Postgraduation

20

12.5

7.

Locality

Urban

93

58.1

Rural

67

41.9

8.

Habits

Smoking

12

7.5

Alcohol

18

11.2

Nonsmokers/Nonalcoholics

130

81.3

9.

Diet (includes fruits and vegetables)

Yes

139

86.9

No

21

13.1

The distribution of subjects according to ADA/IDRS/FINDRISC is shown in [Tables 5] [6] and [7]). The distribution of subjects in the higher risk group was as follows: 20% as per the ADA risk score (> 5), 43.12% as per IDRS (> 60), and 5% as per FINDRISC (> 15).

Table 5

Classification of subjects according to IDRS

IDRS

Frequency

Percentage (%)

Abbreviation: IDRS, Indian Diabetes Risk Score.

Low risk (0–29)

13

8.13

Moderate risk (30–59)

78

48.75

High risk (> 60)

69

43.12

Total

160

Table 6

Classification of subjects according to ADA

ADA risk score

Frequency

Percentage (%)

Abbreviation: ADA, American Diabetic Association.

< 5

128

80.0

5

32

20.0

Table 7

Classification of subjects according to FINDRISC

FINDRISC

Frequency

Percentage (%)

Abbreviation: FINDRISC, Finnish Diabetes Risk Score.

Low (0–6)

81

50.63

Slightly elevated (7–11)

54

33.75

Moderate (12–14)

17

10.62

High (15–20)

06

3.75

Very high (> 20)

02

1.25

Out of the 160 subjects, 19 were newly diagnosed with diabetes based on fasting blood sugar/random blood sugar and HbA1c as per the ADA criteria. Hence, in our study, we observed that the prevalence of diabetes was 11.9%, which is much higher when compared to the other studies which reported 4.8 and 8.1% respectively[13] [14] in Maharashtra and the Boloor community in South India. Out of these 19 newly diagnosed diabetics, 11 were above 40 years of age, which reiterates the increased risk of diabetes above 40 years and is in agreement with other studies.[5] [13]

The diabetes risk assessment of subjects using the three risk scores is shown in [Table 8]. According to IDRS, 42.1% subjects had a score of > 60, indicating high risk to diabetes, that is in agreement with other studies,[5] [8] whereas FINDRISC showed no subjects with a score > 15. This was contradictory to the study done by Pawar et al, who observed 12.6% subjects with a score > 15.[13] In addition, no statistically significant differences were observed among the high- and low-risk categories based on IDRS and FINDRISC.[13] However, in our study, as per the classification based on the ADA risk score, diabetic subjects with scores < 5 and ≥ 5 were 63.2 and 36.8%, respectively. In addition, ADA risk score was the only risk score that showed statistically significant difference (p-value of 0.05) between low- and high-risk subjects. The odds of being affected by diabetes were calculated with respect to people in the high-risk categories with their diabetic status. Individuals with high risk by ADA (> 5) were 2.70 times more likely (95% confidence interval: 0.97–7.56) to be affected by diabetes than individuals without high risk; however, the other two risk scores failed to show any significant difference. Hence, in our study, ADA risk score was superior in screening the risk group than the other two risk scores.

Table 8

Distribution of IDRS, ADA, and FINDRISC cutoff risk scores for diagnosis of diabetes among study subjects

Risk scores

Nondiabetic

Diabetic

Chi-squared

p-Value

Frequency

%

Frequency

%

Abbreviations: ADA, American Diabetic Association; FINDRISC, Finnish Diabetes Risk Score; IDRS, Indian Diabetes Risk Score.Note: * p ≤ 0.05: statistically significant.

IDRS

< 60

80

56.7%

11

57.9

0.009

0.924

> 60

61

43.3%

8

42.1

ADA

< 5

116

82.3%

12

63.2

3.822

0.05*

≥ 5

25

17.7%

7

36.8

FINDRISC

< 15

133

94.3%

19

100.0

1.13

0.287

> 15

8

5.7%

0

0.0

According to a CURES study, IDRS has a sensitivity of 72.5%, specificity of 60.1%, and is derived based on the largest population-based study on diabetes in India. In addition, some recent studies showed a significantly higher sensitivity and specificity,[8] [14]whereas our study observed a stark difference, with much lower sensitivity of 42.11% and specificity of 56.74%. On the other hand, the specificity observed in our study is aligned with the study done by Sowmiya et al.[15] The possible reasons might be a smaller sample size, no significant difference in the percentage of normal and overweight subjects, and family history provided by study subjects.

In comparison to the IDRS sensitivity and specificity levels, FINDRISC showed a specificity of 94.33%, whereas the risk score failed to identify true positive diabetes cases in our study group representing South Indian population. However, studies have shown significant sensitivity and specificity with the FINDRISC score.[16] [17] A probable reason for this disparity might be the variation in dietary habits that are not applicable to our local population, apart from being influenced by a lower socioeconomic status.

Our study observed that ADA risk score assessment had the highest positive and negative predictive values when compared with IDRS and FINDRISC, as shown in [Table 9]. Further, between IDRS and FINDRISC assessments, IDRS has higher positive and negative predictive levels.

Table 9

Comparison of characteristics of the three screening test scores

Screening characteristic

IDRS (> 60)

ADA (≥ 5)

FINDRISC (> 15)

Value

95% CI

Value

95% CI

Value

95% CI

Abbreviations: ADA, American Diabetic Association; AUC, areas under the curve; CI, confidence interval; FINDRISC, Finnish Diabetes Risk Score; IDRS, Indian Diabetes Risk Score; PPV, positive predictive value; NPV, negative predictive value.

Sensitivity (%)

42.11

20.25–66.5

36.84

16.29–61.64

0.00

0.00–17.65

Specificity (%)

56.74

48.14–65.05

82.27

74.95–88.18

94.33

89.13–97.52

Positive likelihood ratio

0.97

0.56–1.70

2.08

1.04–4.13

0.00

Negative likelihood ratio

1.02

0.68–1.54

0.77

0.542–1.09

1.06

1.02–1.10

PPV (%)

11.59

6.97–18.67

21.87

12.34–35.77

0

NPV (%)

87.91

82.84–91.64

90.62

87.18–93.22

87.5

87.05–87.94

Accuracy (%)

55

46.95–62.86

76.88

69.56–83.17

83.12

76.41–88.57

AUC

0.467

0.329–0.605

0.496*

0.350–0.643

0.454

0.332–0.577

Diagnostic accuracy was measured by using the following cutoff: ADA ≥ 5, IDRS > 60, and FINDRISC > 15. Accuracy in detecting the nondiabetic or lower-risk group is as follows: FINDRISC is 83.12%, when compared with IDRS (55%) and ADA (76.88%), as shown in [Table 10]. Our findings are in alignment with other study groups who have recommended the usage of FINDRISC for “ruling out” rather than “ruling in” diabetes.[13]

Table 10

Clinical Utility Index (CUI)

Score name

CUI

Values

Qualitative grades

Abbreviations: ADA, American Diabetic Association; IDRS, Indian Diabetes Risk Score.

ADA risk score

CUI+

0.136

Very poor

CUI-

0.849

Excellent

IDRS

CUI+

0.177

Very poor

CUI-

0.861

Excellent

As shown in [Fig. 1] , area under the curve (AUC) was largest for ADA (0.496) when compared with IDRS and FINDRISC, though there was no statistically significant difference between ADA and the other two risk scores. The AUC for ADA risk score in our study was lower when compared with 0.668 observed in Boloor community and 0.882 in Sharma et al.[14] [18]

Zoom Image
Fig. 1 Comparison of receiver operative characteristic (ROC) curves of Indian Diabetes Risk Score (IDRS), American Diabetes Association (ADA), and Finnish Diabetes Risk Score (FINDRISC).

A B-A plot was used to assess the level of agreement between ADA and IDRS for stratifying the risk of diabetes, as shown in [Fig. 2] . We found a good agreement between the two risk scores. FINDRISC was not included, as it was unable to identify the diabetes positive cases.

Zoom Image
Fig. 2 Bland-Altman plot for assessing the agreement between Indian Diabetes Risk Score (IRDS) and American Diabetes Association (ADA) risk score.

CUI was calculated to measure the clinical relevance of the three risk scores in the local population. Since FINDRISC failed to identify the diabetes positive cases, CUI was calculated only for ADA and IDRS, as shown in [Table 10]. CUI assessments showed that both risk scores were poor in case finding but excellent in ruling out diabetes in the healthy population. To our knowledge, we could find only one study in alignment with our observations regarding CUI.[13]

We also compared the applicability of all three risk scores in detecting prediabetes cases. In our study, only ADA risk score demonstrated the ability to detect prediabetic subjects in the study population, which was statistically significant (p-value = 0.001), as shown in [Table 11]. Our findings are in agreement with the study done by Prabhu et al.[19]

Table 11

Distribution of IDRS, ADA, and FINDRISC cutoff risk scores for diagnosis of prediabetes among study subjects

Risk scores

Nondiabetic

Diabetic

Chi-squared

p-Value

Frequency

%

Frequency

%

Abbreviations: ADA, American Diabetic Association; FINDRISC, Finnish Diabetes Risk Score; IDRS, Indian Diabetes Risk Score.Note: * p ≤ 0.05: statistically significant.

IDRS

< 60

42

51.2

49

62.8

2.193

0.139

> 60

40

48.8

29

37.2

ADA

< 5

57

69.5

71

91

11.563

0.001*

≥ 5

25

30.5

7

9.0

FINDRISC

< 15

77

93.9

75

96.2

0.427

0.514

> 15

5

6.1

3

3.8


#

Conclusion

Our study showed that ADA was in agreement with and was found to be a better risk score for assessing diabetes in the current study population, which could be due to the inclusion of the history of gestational diabetes as one of the variables in its screening criteria. Though our recommendation would be to use ADA risk score or IDRS for screening diabetes in the South Indian population, the comparison needs to be validated in a larger population, considering all the pertinent variables affecting the diagnosis of diabetes. Furthermore, we would suggest that the inclusion of the history of gestational diabetes and hypertension in IDRS might improve its sensitivity as a screening tool in our local population.


#
#

Conflicting Interest

None.

Source(s) of Support

Study approved under ICMR-STS 2019.

Presentation at a Meeting

None.

  • References

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  • 2 International Diabetes Federation. IDF Diabetes Atlas, 9th edition. Brussels, Belgium: International Diabetes Federation; 2019. http://www.diabetesatlas.org. Accessed September 25, 2020
  • 3 Nagalingam S, Sundaramoorthy K, Arumugan B. Screening for diabetes using Indian Diabetes Risk Score. Indian J Adv Med 2016; 3 (02) 415-418
  • 4 Omech B, Mwita JC, Tshikuka J-G, Tsima B, Nkomazna O, Amone-P’Olak K. Validity of the Finnish Diabetes Risk Score for detecting undiagnosed type 2 diabetes among general medical outpatients in Botswana. J Diabetes Res 2016; 2016: 4968350
  • 5 Woo YC, Lee CH, Fong CHY, Tso AWK, Cheung BMY, Lam KSL. Validation of the diabetes screening tools proposed by the American Diabetes Association in an aging Chinese population. PLoS One 2017; 12 (09) e0184840
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  • 14 Adhikari P, Pathak R, Kotian S. Validation of the MDRF-Indian Diabetes Risk Score (IDRS) in another South Indian population through the Boloor Diabetes Study (BDS).. J Assoc Physicians India 2010; 58: 434-436
  • 15 Sowmiya KR, Balaji SM, Arumugam B, Mohanan S. Indian Diabetic Risk Score-a screening tool for detecting type 2 diabetes mellitus at the primary health care level. Natl J Res Community Med 2017; 6 (01) 69-72
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Address for correspondence

N. K. Swetha, MD
Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education and Research
Shivarathreeshwaranagar, Bannimantap, Mysuru, 570015, Karnataka
India   

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  • References

  • 1 Dudeja P, Singh G, Gadekar T, Mukherji S. Performance of Indian Diabetes Risk Score (IDRS) as screening tool for diabetes in an urban slum. Med J Armed Forces India 2017; 73 (02) 123-128
  • 2 International Diabetes Federation. IDF Diabetes Atlas, 9th edition. Brussels, Belgium: International Diabetes Federation; 2019. http://www.diabetesatlas.org. Accessed September 25, 2020
  • 3 Nagalingam S, Sundaramoorthy K, Arumugan B. Screening for diabetes using Indian Diabetes Risk Score. Indian J Adv Med 2016; 3 (02) 415-418
  • 4 Omech B, Mwita JC, Tshikuka J-G, Tsima B, Nkomazna O, Amone-P’Olak K. Validity of the Finnish Diabetes Risk Score for detecting undiagnosed type 2 diabetes among general medical outpatients in Botswana. J Diabetes Res 2016; 2016: 4968350
  • 5 Woo YC, Lee CH, Fong CHY, Tso AWK, Cheung BMY, Lam KSL. Validation of the diabetes screening tools proposed by the American Diabetes Association in an aging Chinese population. PLoS One 2017; 12 (09) e0184840
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Fig. 1 Comparison of receiver operative characteristic (ROC) curves of Indian Diabetes Risk Score (IDRS), American Diabetes Association (ADA), and Finnish Diabetes Risk Score (FINDRISC).
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Fig. 2 Bland-Altman plot for assessing the agreement between Indian Diabetes Risk Score (IRDS) and American Diabetes Association (ADA) risk score.