Table 1– Adjusted association between time spent on public transport and active pulmonary tuberculosis (TB) in Lima, Peru

Characteristic	Transport usage in the week prior to enrolment^#		Transport usage per week during the past year^#
	OR (95% CI)	p-value	OR (95% CI)	p-value
BMI kg·m⁻²	0.78 (0.69–0.88)	<0.001	0.78 (0.70–0.87)	<0.001
Past household TB exposure^¶	3.28 (1.83–5.89)	<0.001	3.38 (1.90–6.04)	<0.001
Marital status
Single	1.00^ƒ		1.00^ƒ
Married	0.66 (0.14–3.17)	0.603	0.62 (0.14–2.83)	0.545
Cohabitation	0.70 (0.33–1.47)	0.346	0.64 (0.30–1.36)	0.242
Divorced/widowed	5.25 (1.39–19.7)	0.015	5.13 (1.36–19.4)	0.016
Occupation
Student	1.00^ƒ		1.00^ƒ
Professional	0.16 (0.03–0.79)	0.025	0.18 (0.04–0.88)	0.034
Labourer	1.13 (0.53–2.38)	0.753	1.13 (0.53–2.40)	0.757
Commercial	1.30 (0.50–3.38)	0.584	1.29 (0.49–3.42)	0.608
Domestic	0.92 (0.28–3.00)	0.886	0.93 (0.29–2.98)	0.906
Public transport worker	0.20 (0.04–1.07)	0.059	0.27 (0.47–1.59)	0.148
Unemployed	1.61 (0.42–6.15)	0.483	1.81 (0.50–6.55)	0.364
Travel between 15:00 h and 18:59 h	1.77 (0.99–3.14)	0.053	1.85 (1.03–3.31)	0.038
Time spent on public transport^+,§
Quintile 1	1.00^ƒ		1.00^ƒ
Quintile 2	1.09 (0.43–2.74)	0.861	1.86 (0.78–4.47)	0.163
Quintile 3	2.00 (0.85–4.73)	0.115	1.52 (0.66–3.46)	0.324
Quintile 4	2.81 (1.12–7.07)	0.028	2.56 (1.06–6.20)	0.037
Quintile 5	2.60 (0.99–6.78)	0.050	1.82 (0.70–4.93)	0.241
Each quintile	1.34 (1.08–1.65)	0.007^##	1.19 (0.97–1.46)	0.093^##

BMI: body mass index. ^#: n=343. ^¶: living with someone who had TB previously. ⁺: during past week: quintile 1, <120 min; quintile 2, 120–279 min; quintile 3, 280–539 min; quintile 4, 540–919 min; and quintile 5, ≥920 min. ^§: per week during the past year: quintile 1, <180 min; quintile 2, 180–319 min; quintile 3, 320–599 min; quintile 4, 600–899 min; and quintile 5 ≥900 min. ^ƒ: reference. ^##: for trend.