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. 2010 Mar 18;340:c877. doi: 10.1136/bmj.c877

Table 9.

 Six Cities Study: frequency of sunbed use by city, age, and sex* (weighted baseline=673)

Overall No At least once/week At least once/month Every 2-6 months Once/year or less
No % (95% CI) No % (95% CI) No % (95% CI) No % (95% CI)
Liverpool 207 88 42.6 (35.8 to 39.3) 56 27.2 (21.1 to 33.3) 23 11.3 (6.9 to 15.6) 33 16.0 (11.0 to 21.0)
Stoke/Stafford 70 23 32.4 (21.5 to 43.4) 8 11.8 (4.3 to 19.4) 10 13.9 (5.8 to 22.0) 27 39.0 (27.5 to 50.4)
Sunderland 186 115 61.6 (54.6 to 68.6) 33 17.5 (12.0 to 22.9) 16 8.4 (4.4 to 12.4) 18 9.4 (5.2 to 13.6)
Bath/Gloucester 69 14 19.9 (10.4 to 29.3) 7 10.2 (3.0 to 17.3) 11 16.8 (7.9 to 25.6) 34 49.8 (38.0 to 61.6)
Oxford/Cambridge 78 10 12.3 (5.0 to 19.6) 9 11.0 (4.0 to 18.0) 27 34.7 (24.1 to 45.3) 27 35.0 (24.4 to 45.6)
Southampton 64 10 15.4 (6.6 to 24.3) 10 15.9 (7.0 to 24.9) 11 17.8 (8.5 to 27.2) 30 47.4 (35.2 to 59.6)
Age group (years):
 11-14 153 33 21.9 (15.4 to 28.5) 25 16.2 (10.3 to 22.0) 37 24.1 (17.3 to 30.9) 47 30.8 (23.4 to 28.1)
 15-17 520 225 43.2 (39.0 to 47.5) 98 18.8 (15.5 to 22.2) 62 11.9 (9.1 to 14.6) 122 23.5 (19.9 to 27.2)
Sex:
 Boys 227 81 35.6 (29.3 to 41.8) 39 17.2 (12.3 to 22.1) 25 10.8 (6.8 to 14.9) 74 32.7 (26.6 to 38.8)
 Girls 446 178 39.8 (35.3 to 44.4) 84 18.8 (15.1 to 22.4) 74 16.6 (13.1 to 20.0) 95 21.4 (17.5 to 25.2)

*Weighted numbers are rounded and thus marginal totals might not add up; 24 respondents (after weighting) said they “did not know” how often they used sunbed.