. 2015 Mar 11;18(16):2998–3012. doi: 10.1017/S1368980015000415

Table 8.

Odds ratios and 95 % confidence intervals for thinness^† from the adjusted logistic regression analyses in 18-year-old men and women, Johannesburg–Soweto, South Africa, Birth to Twenty Plus (Bt20+) cohort

		Step 1		Step 2		Step 3
	n	Adjusted OR^‡	95 % CI	Adjusted OR^‡	95 % CI	Adjusted OR^‡	95 % CI
Men (n 667)
Intrinsic factors
Population group (black African^§)	569
White	34	0·11*	0·01, 0·83	0·12*	0·02, 0·90	0·20	0·02, 1·53
Mixed ancestry	64	2·15**	1·24, 3·71	2·17**	1·25, 3·76	2·33**	1·33, 4·07
Low birth weight (<2500 g) (no^§)	593
Yes	74	1·87*	1·10, 3·18	1·86*	1·09, 3·17	1·91*	1·12, 3·26
Neighbourhood socio-economic factors
Neighbourhood problem index (3rd tertile (low)^§)	212
1st tertile	234			1·22	0·77, 1·93	1·12	0·71, 1·80
2nd tertile	221			1·00	0·62, 1·61	0·96	0·59, 1·55
Household socio-economic factors
Household wealth index (3rd tertile (high)^§)	169
1st tertile	262					1·90*	1·09, 3·31
2nd tertile	236					1·80*	1·03, 3·15
Cox/Snell and Nagelkerke R ² estimates		0·035, 0·053		0·036, 0·055		0·045, 0·069
Deviance		682·61		681·55		675·43
Women (n 551)
Intrinsic factors
Population group (black African^§)	438
White	34	1·49	0·59, 3·77	1·93	0·61, 6·08	1·72	0·52, 5·70
Mixed ancestry	79	3·04***	1·74, 5·30	3·33***	1·82, 6·13	2·98**	1·61, 5·53
Neighbourhood socio-economic factors
Place of residence (Soweto^§)	445
Metropolitan Johannesburg	106			0·76	0·36, 1·57	0·68	0·33, 1·43
Household socio-economic factors
Household wealth index (3rd tertile (high)^§)	164
1st tertile	199					0·49*	0·25, 0·96
2nd tertile	188					1·08	0·60, 1·92
Cox/Snell and Nagelkerke R ² estimates		0·025, 0·044		0·026, 0·046		0·039, 0·068
Deviance		459·70		459·15		451·90

⁽*⁾ P<0·10, *P<0·05, **P<0·01, ***P<0·001.

^†

Thinness was defined using age- and sex-specific international cut-offs for BMI for <18 years⁽ ⁴⁶ ^, ⁴⁷ ⁾ and ≥18 years⁽ ⁴⁸ ⁾.

^‡

OR adjusted by logistic regression.

^§

|Reference category.