Table 4.

Intercorrelations of all predictors and control variables

Predictors	1	2	3	4	5	6	7	8	9
1. Sex	–	0.10*	0.05	−0.05	0.23**	0.28**	−0.14**	0.17**	0.12**
2. Age		–	0.01	0.06	0.25**	0.25**	0.20**	0.03	0.06
3. Headache type			–	−0.05	0.14**	0.13**	0.02	0.14**	0.16**
4. Parental headache				–	0.05	0.03	0.03	0.06	0.01
5. NH coping style					–	0.68**	0.21**	0.29**	0.40**
6. INT						–	0.23**	0.38**	0.40**
7. EXT							–	0.02	0.09*
8. AS								–	0.44**
9. SSA									–

Note:

^*P≤0.05,

^**P≤0.01.

Abbreviations: NH, negative habitual; INT, internalizing; EXT, externalizing; AS, anxiety sensitivity; SSA, somatosensory amplification.