| Type of devices (multiple choice) | | | | | |
| Smart phone | | | 0.370 | // |
| Yes | 188(71.5) | 65(76.5) |
| No | 75(28.5) | 20(23.5) |
| Ordinary phone | | | 0.471 | // |
| Yes | 98(37.3) | 28(32.9) |
| No | 165(62.7) | 57(67.1) |
| Setting mode (multiple choice) | | | | | |
| Ring | | | 0.248 | // |
| Yes | 36(13.7) | 16(18.8) |
| No | 227(86.3) | 69(81.2) |
| Vibrate | | | 0.093 | // |
| Yes | 104(39.5) | 25(29.4) |
| No | 159(60.5) | 60(70.6) |
| Ring and vibrate | | | 0.708 | // |
| Yes | 130(49.4) | 44(51.8) |
| No | 133(50.6) | 41(48.2) |
| Silence | | | 0.285 | // |
| Yes | 13(4.9) | 7(8.2) |
| No | 250(95.1) | 78(91.8) |
| Location of devices (multiple choice) | | | | | |
| Breast pocket | | | 0.461 | // |
| Yes | 9(3.4) | 1(1.2) |
| No | 254(96.6) | 84(98.8) |
| Side pocket | | | 0.012 | 2.07 (1.16, 3.68) |
| Yes | 221(84.0) | 61(71.8) |
| No | 42(16.0) | 24(28.2) |
| Back pocket | | | 0.570 | // |
| Yes | 2(0.8) | 1(1.2) |
| No | 261(99.2) | 84(98.8) |
| Belt | | | 1* | // |
| Yes | 2(0.8) | 0(0) |
| No | 261(99.2) | 85(100) |
| Jacket pockets | | | 0.946 | // |
| Yes | 16(6.1) | 5(5.9) |
| No | 247(93.9) | 80(94.1) |
| bag or hand bag | | | 0.004 | 0.48 (0.29, 0.79) |
| Yes | 76(28.9) | 39(45.9) |
| No | 187(71.1) | 46(54.1) | 1 |
| Phone attachment(a) | | | | 0.005 | 2.1(1.25, 3.57) |
| Yes | 123(46.8) | 25(29.4) |
| No | 140(53.2) | 60(70.6) |
| Hours of using phone per day | | | | 0.115 | // |
| <3 hours | 123(47.3) | 52(61.2) |
| 3-6 hours | 81(31.1) | 17(20.0) |
| >6 – 12 hours | 33(12.7) | 11(12.9) |
| >12 hours | 23(8.8) | 5(5.8) |
| Frequency of checking phone for different purposes (every hours or minutes per time) | | | | | |
| Texting | | | 0.670 | // |
| Not for this purpose | 4(1.5) | 2(2.3) |
| <30 minutes | 102(38.8) | 31(36.5) |
| 30-60 minutes | 15(5.7) | 2(2.3) |
| >1-6 hours | 71(27.0) | 23(27.1) |
| >6 hours | 71(27.0) | 27(31.8) |
| Receiving or making phone calls | | | 0.460 | // |
| Not for this purpose | 2(0.8) | 1(1.2) |
| <30 minutes | 94(35.7) | 29(34.1) |
| 30-60 minutes | 6(2.3) | 5(5.9) |
| >1-6 hours | 52(19.8) | 14(16.5) |
| >6 hours | 109(41.4) | 36(42.3) |
| Checking social networks | | | 0.086 | // |
| Not for this purpose | 58(22.1) | 17(20.0) |
| <30 minutes | 75(28.5) | 27(31.8) |
| 30-60 minutes | 22(8.4) | 1(1.2) |
| >1-6 hours | 71(27.0) | 22(25.9) |
| >6 hours | 37(14.0) | 18(21.1) |
| Reading news | | | 0.723 | // |
| Not for this purpose | 80(30.4) | 29(34.1) |
| <30 minutes | 66(25.1) | 17(20.0) |
| 30-60 minutes | 10(3.8) | 3(3.5) |
| >1-6 hours | 46(17.5) | 19(22.4) |
| >6 hours | 61(23.2) | 17(20.0) |
| Checking email | | | 0.696 | // |
| Not for this purpose | 130(49.4) | 41(48.2) |
| <30 minutes | 47(17.9) | 11(12.9) |
| 30-60 minutes | 2(0.8) | 1(1.2) |
| >1-6 hours | 11(4.2) | 4(4.7) |
| >6 hours | 73(27.7) | 28(33.0) |