Table 2. Reference probability and marginal effects of experiencing pain or fatigue during the previous week (logistic regression, population averaged model).

Variable	Marginal effect	Probability	p-value	95% confidence interval for marginal effect
Outcome: Pain last week
Reference case estimated probability  = 0.543*
sex (male)	−0.104	43.9%	0.000	[−0.156,−0.052]
18–29 years old	−0.053	49.0%	0.038	[−0.103,−0.003]
40–49 years old	0.082	62.5%	0.003	[0.028,0.136]
50+ years old	0.066	60.9%	0.123	[−0.018,0.150]
−90 to −1 days	0.201	74.4%	0.000	[0.109,0.293]
0 to 30 days (reference)	*	54.3%	*	*
31–90 days	−0.038	50.5%	0.397	[−0.126,0.050]
91–180 days	−0.052	49.1%	0.193	[−0.131,0.026]
181–270 days	−0.024	51.9%	0.589	[−0.110,0.062]
271–360 days	−0.076	46.7%	0.087	[−0.162,0.011]
361–450 days	−0.098	44.5%	0.026	[−0.184,−0.012]
451–540 days	−0.133	41.0%	0.003	[−0.221,−0.045]
541–630 days	−0.135	40.8%	0.003	[−0.224,−0.045]
631–720 days	−0.178a	36.5%	0.000	[−0.264,−0.093]
721–810 days	−0.278	26.5%	0.000	[−0.357,−0.199]
811–900 days	−0.189	35.4%	0.000	[−0.267,−0.110]
901–990 days	−0.25	29.3%	0.000	[−0.327,−0.173]
991–1080 days	−0.220a	32.3%	0.000	[−0.297,−0.142]
Outcome: Fatigue last week
Reference case estimated probability  = 0.498
sex (male)	−0.068	43.0%	0.021	[−0.126,−0.01]
18–29 years old	0.004	50.2%	0.894	[−0.051,0.059]
40–49 years old	0.035	53.3%	0.283	[−0.028,0.098]
50+ years old	0.054	55.2%	0.265	[−0.041,0.15]
−90 to −1 days	0.158	65.6%	0.002	[0.06,0.256]
0 to 30 days (reference)	*	49.8%	*	*
31–90 days	−0.023	47.5%	0.614	[−0.111,0.066]
91–180 days	−0.17	32.8%	0.000	[−0.247,−0.092]
181–270 days	−0.171	32.7%	0.000	[−0.254,−0.087]
271–360 days	−0.226	27.2%	0.000	[−0.309,−0.144]
361–450 days	−0.241	25.7%	0.000	[−0.323,−0.160]
451–540 days	−0.249	24.9%	0.000	[−0.332,−0.166]
541–630 days	−0.275	22.3%	0.000	[−0.358,−0.191]
631–720 days	−0.292b	20.6%	0.000	[−0.371,−0.212]
721–810 days	−0.341	15.7%	0.000	[−0.416,−0.266]
811–900 days	−0.328	17.0%	0.000	[−0.402,−0.254]
901–990 days	−0.372	12.6%	0.000	[−0.444,−0.300]
991–1080 days	−0.374a	12.4%	0.000	[−0.445,−0.302]

*Reference case is a female subject age 30–39, 1–30 days on ART.

^aIndicates p-value ≤0.05 for Wald test that marginal effect equals marginal effect for 271–360 days on ART.

^bIndicates p-value >0.05 for Wald test that marginal effect equals marginal effect for 271–360 days on ART.