Table 5 Hierarchal Linear Regression Analysis showing effect of impulsive sensation seeking and other covariates on Nomophobia (n = 1626)

Step1

 ImpSS

0.796

0.515

24.185

< 0.001^*

0.732

0.861

R² = 0.265, Adjusted R² = 0.264, F = 584.921, p < 0.001^*

Step2

 ImpSS

0.800

0.517

24.341

< 0.001^*

0.736

0.865

 Marital Status

5.552

0.064

2.999^*

0.003^*

9.184

1.921

R² = 0.269, Adjusted R² = 0.268, F = 298.396, p < 0.001^*

Step3

 ImpSS

0.800

0.517

24.398

< 0.001^*

0.736

0.865

 Marital Status

5.787

0.066

3.129

0.002^*

9.415

2.159

 Year of study

2.280

0.059

2.771

0.006^*

0.666

3.894

R² = 0.272, Adjusted R² = 0.271, F = 202.308, p < 0.001^*

Step4

 ImpSS

0.790

0.511

23.935

< 0.001^*

0.725

0.855

 Marital Status

5.492

0.063

2.968

0.003^*

9.122

1.862

 Year of study

2.243

0.058

2.730

0.006^*

0.631

3.855

 Mean daily time using smartphone

2.832

0.053

2.481

0.013^*

0.593

5.071

R² = 0.275, Adjusted R² = 0.273, F = 153.752, p < 0.001^*

Step5

 ImpSS

0.793

0.512

24.026

< 0.001^*

0.728

0.857

 Marital Status

5.974

0.069

3.210

0.001^*

9.624

2.323

 Year of study

2.119

0.055

2.576

0.010^*

0.506

3.733

 Mean daily time on smartphone

2.792

0.052

2.448

0.014^*

0.555

5.028

 Age

3.410

0.047

2.211

0.027^*

0.386

6.434

R² = 0.277, Adjusted R² = 0.275, F = 124.275, p < 0.001^*