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Table 2 Comparison of characteristics by participants’ smoking status at the end of study

From: A smoking quitline integrated with clinician counselling at outpatient health facilities in Vietnam: a single-arm prospective cohort study

Characteristic Continuing to smoke at 12 months Self-reported smoking cessation at 12 months Biochemically-verified smoking cessation at 12 months
Total (row %) 128 (58.7) 77 (35.3) 13 (6.0)
Demographic factors
 Age, median years (IQR) 50 (37.5 – 59) 50 (38 – 61) 56 (51 – 61)
Highest level of education attained, n (%)
 Less than primary 2 (0.6) 1 (1.3) 0 (0)
 Primary 2 (1.6) 3 (3.9) 0 (0)
 Lower secondary 52 (40.6) 32 (41.6) 6 (46.2)
 Upper secondary 47 (36.7) 25 (32.5) 6 (46.2)
 University degree, or equivalent, or higher 25 (19.5) 16 (20.8) 1 (7.7)
Smoking-related factors
 Median average number of cigarettes/day (IQR)* 20 (10 – 30) 20 (10 – 30) 10 (5 – 17.5)
 Score on the Fagerström Test for Cigarette Dependence (IQR)* 6 (5 – 8) 6 (5 – 7) 5 (2.5 – 6)
 Median years smoking (IQR) 22 (15 – 40) 30 (15 – 40) 30 (30 – 36)
 Ever attempted to quit in the past, n (%) 92 (71.9) 60 (77.9) 9 (69.2)
 Drink alcohol every day, n (%) 44 (34.4) 33 (42.9) 3 (23.1)
 Drink caffeinated drinks every day, n (%) 95 (74.2) 50 (64.9) 10 (76.9)
 Living with at least one other smoker, n (%) 32 (25.0) 17 (22.1) 3 (23.1)
Reasons given to quit, n (%)
 Personal health condition 123 (96.1) 73 (94.8) 12 (92.3)
 Family’s health 15 (11.7) 11 (14.3) 2 (15.4)
 Expense 8 (6.3) 1 (1.3) 0 (0)
Quitting-related factors
 Advised to quit by referral doctor, n (%) 103 (87.3) 64 (90.1) 11 (100)
 Received written material from referring doctor, n (%) 68 (57.6) 40 (56.3) 6 (54.6)
Days from baseline to target quit date, n (%)§
 Less than 14 days 87 (68.5) 62 (79.5) 11 (100)
 14 days or more, or did not commit to a target quit date 40 (31.5) 16 (20.5) 0 (0)
 Number of successful counselling phone calls, median (IQR)§ 7 (5 – 8) 8 (7 – 8) 8 (7 – 8)
  1. *63 missing values; 18 missing values; §Statistically significant (p < 0.05)
  2. IQR, interquartile range