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Table 1 Descriptive statistics for the Swedish translated PROMIS Pediatric item banks Pain Interference v.2.0., Pediatric Fatigue v.2.0., and Pediatric Physical Activity v.1.0

From: Psychometrics of three Swedish physical pediatric item banks from the Patient-Reported Outcomes Measurement Information System (PROMIS)®: pain interference, fatigue, and physical activity

Items

Total sample N = 681

Response Category Frequencies

Mean

SD

rit c

α-i

1

2

3

4

5

Pain interference total scale

29.24

14.28

       

1. I felt angry when I had pain …

1.58

0.98

0.70

0.97

458

102

85

20

16

2. I had trouble doing schoolwork when I had pain …

1.68

1.08

0.82

0.97

443

94

90

30

24

3. I had trouble sleeping when I had pain…

1.65

1.06

0.80

0.97

448

100

81

30

22

4. It was hard for me to pay attention when I had pain …

1.69

1.08

0.84

0.97

435

97

94

34

21

5. It was hard for me to run when I had pain …

1.79

1.18

0.76

0.97

416

99

93

37

36

6. It was hard for me to walk one block when I had pain …

1.39

0.82

0.80

0.97

523

80

56

13

9

7. It was hard to have fun when I had pain…

1.57

1.01

0.82

0.97

477

83

75

29

17

8. It was hard to stay standing when I had pain …

1.46

0.93

0.84

0.97

513

74

57

24

13

9. I hurt a lot …

1.59

0.97

0.82

0.97

452

111

80

23

15

10. I hurt all over my body…

1.42

0.84

0.74

0.97

509

93

55

15

9

11. I missed school when I had pain …

1.31

0.69

0.77

0.97

542

82

46

7

4

12. It was hard for me to remember things when I had pain …

1.32

0.76

0.79

0.97

547

78

39

7

10

13. It was hard to get along with other people when I had pain …

1.32

0.73

0.80

0.97

542

78

45

11

5

14. It was hard for me to be away from home because I had pain …

1.33

0.75

0.83

0.97

546

70

48

11

6

15. It was hard to have fun with friends because I was in pain…

1.37

0.80

0.84

0.97

531

77

50

16

7

16. I needed help walking when I was in pain …

1.21

0.61

0.71

0.97

592

51

28

6

4

17. I walked carefully when I was in pain…

1.49

0.95

0.75

0.97

496

88

60

21

16

18. I had so much pain I had to stop what I was doing…

1.39

0.82

0.81

0.97

528

71

58

19

5

19. My pain was so bad that I needed to take medicine to treat it…

1.41

0.89

0.67

0.97

529

69

50

20

13

20. It was hard to do things with my family because I had pain …

1.27

0.71

0.78

0.97

571

59

34

10

7

Fatigue total scale

52.63

22.77

       

1. Being tired made it hard for me to keep up with my schoolwork…

2.36

1.27

0.78

0.97

235

152

159

84

51

2. Being tired made it hard for me to play or go out with my friends as much as I'd like…

1.86

1.11

0.73

0.97

364

134

117

44

22

3. I felt weak…

2.04

1.16

0.74

0.97

306

154

135

60

26

4. I got tired easily…

2.74

1.32

0.74

0.97

163

139

167

135

77

5. I had trouble finishing things because I was too tired…

2.39

1.27

0.79

0.97

233

139

169

93

47

6. I had trouble starting things because I was too tired…

2.52

1.32

0.79

0.97

219

125

163

115

59

7. I was so tired it was hard for me to pay attention…

2.31

1.22

0.81

0.97

246

133

177

93

32

8. I was too tired to do sports or exercise…

2.11

1.28

0.72

0.97

304

154

119

49

55

9. I was too tired to do things outside…

1.84

1.08

0.79

0.97

365

142

104

58

12

10. I was too tired to enjoy the things I like to do…

1.89

1.10

0.80

0.97

353

132

133

45

18

11. I felt tired even when I had not done anything…

2.29

1.30

0.81

0.97

274

118

150

93

46

12. It was hard for me to get out of bed in the morning because I was too tired …

2.81

1.44

0.68

0.97

184

114

143

25

115

13. I felt too tired to spend time with my friends…

1.85

1.06

0.77

0.97

347

160

118

39

17

14. I felt more tired than usual when I woke up in the morning…

2.31

1.30

0.74

0.97

260

135

159

71

56

15. I felt tired…

3.02

1.36

0.73

0.97

138

95

176

156

116

16. I needed to sleep during the day…

2.15

1.31

0.64

0.97

315

121

132

55

58

17. I was too tired to watch television…

1.63

0.97

0.68

0.97

433

118

93

26

11

18. I was too tired to eat…

1.50

0.91

0.66

0.97

488

86

77

20

10

19. I was too tired to take a bath or shower…

1.70

1.05

0.71

0.97

424

111

90

41

15

20. I was so tired it was hard for me to focus on my work…

2.31

1.25

0.83

0.97

252

134

174

77

44

21. Being tired kept me from having fun…

1.72

1.02

0.80

0.97

401

134

97

36

13

22. I was too tired to go up and down a lot of stairs…

1.59

1.03

0.68

0.97

464

106

60

28

23

23. I was too tired to go out with my family…

1.58

0.97

0.71

0.97

451

124

65

25

16

24. I was too tired to read…

2.15

1.28

0.74

0.97

310

121

134

72

44

25. Being tired made it hard for me to remember things…

1.97

1.17

0.80

0.97

339

133

123

61

25

Physical activity total scale

29.73

9.07

       

1. How many days did you exercise so much that you breathed hard?

2.93

1.15

0.84

0.92

102

107

267

145

60

2. How many days did you play sports for 10 min or more?

3.32

1.18

0.77

0.93

67

75

237

179

123

3. How many days were you so physically active that you sweated?

3.10

1.12

0.84

0.93

74

102

259

173

73

4. How many days did you exercise or play so hard that your body got tired?

2.87

1.13

0.85

0.92

105

112

278

135

51

5. How many days did you exercise or play so hard that your muscles burned?

2.49

1.09

0.76

0.93

153

184

224

96

24

6. How many days did you exercise or play so hard that you felt tired?

2.75

1.14

0.78

0.93

123

135

258

121

44

7. On a usual day. how physically active were you?

3.31

1.03

0.63

0.93

23

145

188

249

76

8. How many days did you exercise really hard for 10 min or more?

2.73

1.18

0.81

0.93

133

138

238

122

50

9. How many days were you physically active for 10 min or more?

3.72

1.16

0.52

0.94

38

56

187

178

222

10. How many days did you run for 10 min or more?

2.50

1.21

0.66

0.93

189

141

209

103

39

  1. M mean, SD standard deviation, ritc corrected item-total correlation, α-i ordinal alpha if the item is removed