Table 5. Reference probability, marginal effects, and duration of inability to perform normal activities in previous work week.

Variable	Marginal effect	Probability or number of days	p-value	95% confidence interval for marginal effect
Outcome: Unable to perform normal activities in previous week because of problems with physical or mental healthc
Reference case estimated probability  = 0.356
sex (male)	−0.039	31.7%	0.164	[−0.095,0.016]
18–29 years old	−0.02	33.6%	0.466	[−0.075,0.034]
40–49 years old	0.07	42.6%	0.034	[0.005,0.135]
50+ years old	0.033	38.9%	0.517	[−0.067,0.133]
–90 to −1 days	0.140	49.6%	0.005	[0.041,0.240]
0 to 30 days (reference)	*	35.6%	*	*
31–90 days	0.003	35.9%	0.949	[−0.082,0.087]
91–180 days	−0.09	26.6%	0.017	[−0.163,−0.016]
181–270 days	−0.112	24.4%	0.005	[−0.191,−0.034]
271–360 days	−0.15	20.6%	0.000	[−0.227,−0.073]
361–450 days	−0.166	19.0%	0.000	[−0.242,−0.089]
451–540 days	−0.152	20.4%	0.000	[−0.230,−0.073]
541–630 days	−0.194	16.2%	0.000	[−0.271,−0.117]
631–720 days	−0.200b	15.6%	0.000	[−0.275,−0.126]
721–810 days	−0.266	9.0%	0.000	[−0.335,−0.197]
811–900 days	−0.241	11.5%	0.000	[–0.311,−0.172]
901–990 days	−0.265	9.1%	0.000	[−0.333,−0.197]
991–1080 days	−0.243a	11.3%	0.000	[−0.312,−0.175]
Outcome: Number of days unable to perform normal activities in previous week because of problems with physical or mental health if any inability in previous weekd
Reference case estimated number of days  = 3.036
sex (male)	−0.001	3.303	0.994	[−0.330,0.327]
18–29 years old	−0.111	3.193	0.487	[−0.426,0.203]
40–49 years old	0.054	3.358	0.759	[−0.288,0.396]
50+ years old	0.092	3.396	0.735	[−0.441,0.625]
−90 to −1 days	0.543	3.847	0.046	[0.009,1.077]
0 to 30 days (reference)	*	3.304	*	*
31–90 days	0.089	3.393	0.734	[−0.425,0.603]
91–180 days	0.09	3.394	0.719	[−0.401,0.581]
181–270 days	0.567	3.871	0.046	[0.010,1.124]
271–360 days	0.745	4.049	0.015	[0.144,1.346]
361–450 days	0.437	3.741	0.161	[−0.174,1.048]
451–540 days	0.36	3.664	0.252	[−0.255,0.976]
541–630 days	0.16	3.464	0.649	[−0.527,0.847]
631–720 days	−0.056a	3.248	0.869	[−0.719,0.608]
721–810 days	0.122	3.426	0.751	[−0.635,0.880]
811–900 days	−0.174	3.130	0.600	[−0.822,0.475]
901–990 days	0.05	3.354	0.889	[−0.654,0.754]
991–1080 days	−0.759a	2.545	0.020	[−1.400,−0.118]

*Reference case is a female subject age 30–39, 0–30 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.

^cLogistic regression, population averaged model.

^dLinear regression, population averaged model; marginal effect  =  linear regression coefficient.