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Table 2 Exploratory Factor Analysis of the J-DRSP

From: The reliability and validity of the Japanese version of the Daily Record of Severity of Problems (J-DRSP) and Development of a Short-Form version (J-DRSP (SF)) to assess symptoms of premenstrual syndrome among Japanese women

 

Factor 1

Factor 2

Uniqueness

3 felt worthless

0.9951

−0.1556

0.2038

5 mood swings

0.8566

0.0424

0.2133

1 depressed

0.852

0.0142

0.2569

2 hopeless

0.8459

−0.0083

0.2944

16 overwhelmed

0.8139

−0.0108

0.3498

4 tense

0.788

0.0951

0.2645

6 easily hurt

0.7338

0.1663

0.2619

10 difficulty concentrating

0.5923

0.2181

0.4197

8 conflict with people

0.5137

0.2898

0.4424

9 less interest

0.4939

0.3095

0.4449

17 out of control

0.4885

0.3619

0.3814

12 increased appetite

−0.1345

0.7745

0.5288

14 sleep more

0.0775

0.6646

0.4797

13 craving specific foods

−0.0397

0.6433

0.6206

11 lethargic

0.2059

0.6431

0.3575

19 weight gain

0.0781

0.6196

0.5419

7 irritable

0.33

0.4594

0.4665

15 trouble getting to sleep

0.1988

0.4349

0.6496

21 headache

0.1212

0.395

0.7618

20 joint or muscle pain

0.0638

0.3311

0.8566

18 breast tenderness

0.1062

0.3185

0.8397

  1. Factor 1: Psychological Factor, Factor 2: Physcial Factor
  2. Cronbach’s α of Factor 1 and Factor 2 were 0.95 and 0.84, respectively
  3. Kaiser-Meyer-Olkin test: 0.922
  4. Bartlett’s test of sphericity Chi-square: 3653.89 (P < 0.001)