Table 2 Predictive factors for favourable outcome (> 50% reduction of headache days/month) of the treatment programme

Age (< 40 years, 367;

> 40 years; 471)

Referent

1.8

(1.35 - 2.39) < .001

Refererent

1.93

(1.33 - 2.79) < .001

Nicotin (yes, 118; no, 588)

0.71 (0.48 - 1.07) 0.10

0.75 (0.48 - 1.18) 0.21

BMI (> 25, 288; < 25, 543)

0.92 (0.69 - 1.24) 0.58

0.98 (0.67-1.43) 0.90

Education (low education, 510; high education, 246)

0.97 (0.71 - 1.33) 0.85

1.02 (0.70-1.50) 0.90

MTP (no, 557; yes, 273)

0.73 (0.54 - 0.97) 0.05

0.70 (0.47-1.02) 0.06

Headache frequency at baseline (number of patients)

0-5 days (251)

1.0 Referent

1.0 Referent

6-10 days (255)

1.39 (0.94 - 2.04) < .001

1.56 (0.99-2.47) 0.05

11-15 days (145)

1.89 (1.22 - 2.93) .004

2.08 (1.24-3.51) < .001

16-20 days (49)

5.03 (2.64 - 9.61) < .001

7.42 (3.29-16.75) < .001

21-25 days (30)

4.38 (2.00 -9.60) < .001

8.65 (3.14-23.84) < .001

26-30 days (108)

2.92 (1.82 - 4.69) < .001

6.57 (3.20-13.49) < .001

Headache diagnosis (n)

Migraine (635)

1.0 Referent

1.0 Referent

Migraine + TTH (131)

1.14 (0.77 - 1.68) 0.51

0.69 (0.41-1.17) 0.17

TTH (72)

1.07 (0.65 - 1.77) 0.79

0.34 (0.16-0.73) 0.005*

Family (single, 175; partnership, 540)

0.69 (0.49 - 0.98) 0.04

0.78 (0.52-1.17) 0.23