Table 1 Baseline participants demographic characteristics for all participants and separated by point of cessation and chronic stress at the beginning of the PREVIEW intervention

Age (m ± sd)

51.6 ± 11.6

47.6 ± 12.5

48.4 ± 12.1

51.1 ± 11.2

54.8 ± 10.1

55.5 ± 10.4

52.9 ± 11.0

49.2 ± 11.7

47.8 ± 11.8

Sex (%)

 Men

720

(32.4%)

96

(26.5%)

155 (32.5%)

126 (30.1%)

343 (35.7%)

224

(42.7%)

240

(34.6%)

155

(27.4%)

101

(23.1%)

 Women

1500 (67.6%)

266 (73.5%)

322 (67.5%)

293 (69.9%)

619 (64.3%)

300

(57.3%)

454

(65.4%)

410

(72.6%)

336

(76.9%)

BMI (m ± sd)

35.4 ± 6.6

36.4 ± 7.9

37.0 ± 6.9

36.8 ± 6.6

33.5 ± 5.3

34.3 ± 5.4

34.6 ± 5.9

35.8 ± 6.8

37.2 ± 8.0

Degree of education (%)

 Up to secondary education

373

(16.8%)

75

(20.7%)

79

(16.6%)

86

(20.5%)

133 (13.8%)

74

(14.1%)

131 (18.9%)

78

(13.8%)

90

(20.6%)

 Secondary vocational education

389

(17.5%)

61

(16.9%)

100 (21.0%)

64

(15.3%)

164 (17.0%)

101 (19.3%)

106 (15.3%)

105 (18.6%)

77

(17.6%)

 Higher vocational education

367

(16.5%)

46

(12.7%)

65

(13.6%)

70

(16.7%)

186 (19.3%)

109 (20.8%)

123 (17.7%)

82

(14.5%)

53

(12.1%)

 University education

835

(37.6%)

134 (37.0%)

176 (36.9%)

161 (38.4%)

364 (37.8%)

176 (33.6%)

255 (36.7%)

242 (42.8%)

162 (37.1%)

 Other

256

(11.5%)

46

(12.7%)

57

(11.9%)

38

(9.1%)

115 (12.0%)

64

(12.2%)

79

(11.4%)

58

(10.3%)

55

(12.6%)

Ethnicity

 Caucasian

1944 (87.6%)

279 (77.1%)

429 (89.9%)

345 (82.3%)

891 (92.6%)

484 (92.4%)

622 (89.6%)

485 (85.8%)

353 (80.8%)

 Other

276

(12.4%)

83

(22.9%)

48

(10.1%)

74

(17.7%)

71

(7.4%)

40

(7.6%)

72

(10.4%)

80

(14.2%)

84

(19.2%)

Marital status

 Married or Civil Partnership

1502 (67.7%)

212 (58.6%)

309 (64.8%)

267 (63.7%)

714 (74.2%)

366 (69.8%)

484 (69.7%)

385 (68.1%)

267 (61.1%)

 Divorced, widowed, separated

354

(15.9%)

73

(20.2%)

74

(15.5%)

73

(17.4%)

134 (13.9%)

99

(18.9%)

105 (15.1%)

76

(13.5%)

74

(16.9%)

 Single or other

364

(16.4%)

77

(21.3%)

94

(19.7%)

79

(18.9%)

114 (11.9%)

59

(11.3%)

105 (15.1%)

104 (18.4%)

96

(22.0%)

Household – Living with others

 One adult

447

(20.1%)

84

(23.2%)

98

(20.5%)

88

(21.0%)

177 (18.4%)

109 (20.8%)

129 (18.6%)

109 (19.3%)

100 (22.9%)

 Two adults

922

(41.5%)

120 (33.1%)

182 (38.2%)

167 (39.9%)

453 (47.1%)

261 (49.8%)

310 (44.7%)

218 (38.6%)

133 (30.4%)

 Three or more adults

340

(15.3%)

51

(14.1%)

76

(15.9%)

64

(15.3%)

149 (15.5%)

68

(13.0%)

113 (16.3%)

85

(15.0%)

74

(16.9%)

 One adult and at least one child

48

(2.2%)

18

(5.0%)

14

(2.9%)

11

(2.6%)

5

(0.5%)

-

16

(2.3%)

20

(3.5%)

11

(2.5%)

 Two adults and at least one child

397

(17.9%)

73

(20.2%)

90

(18.9%)

76

(18.1%)

158 (16.4%)

74

(14.1%)

111 (16.0%)

117 (20.7%)

95

(21.7%)

 Three or more adults at least one child

66

(3.0%)

16

(4.4%)

17

(3.6%)

13

(3.1%)

20

(2.1%)

11

(2.1%)

15

(2.2%)

16

(2.8%)

24

(5.5%)

Employment

 In Study or Employment (Regardless of hours)

1429 (64.4%)

226 (62.4%)

315 (66.0%)

298 (71.1%)

590 (61.3%)

317 (60.5%)

463 (66.7%)

392 (69.4%)

257 (58.8%)

 Not economically active (e.g. carer, unemployed, off sick)

230

(10.4%)

52

(14.4%)

56

(11.7%)

39

(9.3%)

83

(8.6%)

32

(6.1%)

60

(8.6%)

63

(11.2%)

75

(17.2%)

 Retired

375

(16.9%)

47

(13.0%)

62

(13.0%)

57

(13.6%)

209 (21.7%)

126 (24.0%)

125 (18.0%)

71

(12.6%)

53

(12.1%)

 Other

186

(8.4%)

37

(10.2%)

44

(9.2%)

25

(6.0%)

80

(8.3%)

49

(9.4%)

46

(6.6%)

39

(6.9%)

52

(11.9%)