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Table 1 Distribution of self-reported and phone bill-derived number of daily text messages sent among young adults ages 18–24 (n = 87)

From: A validity study of self-reported daily texting frequency, cell phone characteristics, and texting styles among young adults

Self-reported number

Phone bill-derived number

<=10

11–20

21–50

51–100

101–200

201–300

301–500

>500

Total

<= 10

2*

0

2

0

0

0

0

0

4

11 – 20

2

4

1

1

0

0

0

0

9

21 – 50

5

3

6

6

1

0

0

0

21

51 – 100

3

0

8

6

0

0

0

0

17

101 – 200

0

3

3

5

4

1

0

0

16

201 – 300

2

1

1

4

2

1

0

0

11

301 – 500

0

1

0

4

1

1

0

0

7

>500

0

0

0

1

1

1

0

0

3

Total

14

12

21

27

9

4

0

0

87

  1. *numbers in table are counts.
  2. Note: Bolded values reflect over-estimation of the self-reported number.