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Table 2 Item response theory parameters of unhealthy weight control

From: Identifying the ‘red flags’ for unhealthy weight control among adolescents: Findings from an item response theory analysis of a national survey

 

Healthy

Unhealthy

 

Difficulty

Discrimination

Difficulty

Discrimination

Vomited

-

-

2.328

1.238

Diet pills

-

-

2.144

0.881

Smoked cigarettes

-

-

2.546

0.620

Fasted

-

-

1.412

1.401

Skipped meals

-

-

0.630

1.226

Exercised

-2.628

0.553

-

-

Ate less fatty food

-0.641

1.931

-

-

Counted calories

3.370

0.465

4.458

0.337

Ate fewer sweets/less sugar

-0.082

1.005

-

-

Ate fewer carbohydrates

1.569

0.696

3.446

0.269

Ate high protein diet

2.053

0.590

-

-

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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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