Table 2

Search strategy used in Medline database

Database: Ovid Medline (R) 1946 to March 2017
SNSearch strategyResults
1Only Child/or Child/or child.mp. or Child, Preschool/1 767 004
2Infant/or infant.mp.1 030 660
3Kid.mp.1251
4Toddler.mp.2240
51 or 2 or 3 or 42 242 988
6Screen time.mp.639
7Smartphones.mp. or Cell Phones/5961
8Mobile phones.mp.1627
9Handheld computers.mp. or Computers, Handheld/2721
10Smartboard.mp.2
11PDA.mp.5860
12Screen media.mp.42
13Mobile screen.mp.5
14Microcomputers/or Computers, Handheld/or electronic tablets.mp.16 724
15Tablets/or Tablets.mp.34 967
16Mobile Applications/or iPads.mp.699
17Handheld media.mp.1
18Touchscreens.mp.22
19Mobile devices.mp.552
20Digital technology.mp.348
216 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 2064 324
225 and 216648
23(‘Screen-viewing’ or ‘screen time’ or ‘mobile use’ or ‘use of smartphones’ or ‘Cell phone use’ or ‘increased screen time’ or ‘use of electronic tablets’ or ‘use of mobile screens’).mp.965
245 and 21 and 23525
25Limit 24 to (English language and humans and yr=‘2009 -Current’ and ‘all child (0 to 18 years)’)482
  • mp: title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept word, rare disease supplementary concept word, unique identifier.

  • *Sign denotes for any character(s).

  • SN, serial number.