Table 2.

Frequencies of women starting, increasing, or decreasing the amount of caffeine intake throughout pregnancy, compared to pre-pregnancy.

Compared to Pre-Pregnancy Values	T1	T2	T3
	n = 463	n = 437	n = 428
Coffee
No consumers	n = 218	n = 207	n = 201
Start consuming	3.7%	3.4%	5.5%
Consumers	n = 245	n = 230	n = 227
Increase intake	1.2%	0.8%	1.8%
Decrease intake	75.5%	80.0%	83.7%
Decaffeinated coffee
No consumers	n = 364	n = 342	n = 335
Start consuming	17.0%	30.4%	31.0%
Consumers	n = 99	n = 95	n = 93
Increase intake	0.0%	24.2%	24.7%
Decrease intake	69.7%	53.7%	50.5%
Tea
No consumers	n = 311	n = 291	n = 286
Start consuming	0.3%	3.8%	2.1%
Consumers	n = 152	n = 146	n = 142
Increase intake	1.3%	5.5%	5.6%
Decrease intake	76.3%	88.4%	90.9%
Cola drinks
No consumers	n = 173	n = 162	n = 163
Start consuming	9.3%	18.5%	22.1%
Consumers	n = 290	n = 275	n = 265
Increase intake	1.7%	13.8%	14.3%
Decrease intake	71.0%	77.1%	77.7%
Energy drinks
No consumers	n = 424	n = 400	n = 390
Start consuming	0.0%	0.0%	0.00%
Consumers	n = 39	n = 37	n = 38
Increase intake	0.0%	2.7%	0.0%
Decrease intake	100%	97.3%	100%
Milk Chocolate
No consumers	n = 121	n = 114	n = 112
Start consuming	4.1%	53.5%	58.9%
Consumers	n = 342	n = 323	n = 316
Increase intake	5.60%	40.6%	42.1%
Decrease intake	44.2%	48.0%	45.6%
Dark Chocolate
No consumers	n = 355	n = 335	n = 330
Start consuming	0.5%	5.7%	5.5%
Consumers	n = 108	n = 102	n = 98
Increase intake	10.2%	16.7%	12.2%
Decrease intake	65.7%	77.5%	86.7%
All sources
No consumers	n = 7	n = 6	n = 7
Start consuming	28.6%	83.3%	100%
Consumers	n = 456	n = 431	n = 421
Increase intake	5.3%	16.5%	18.1%
Decrease intake	84%	82.8%	80.8%

T1, T2, T3: first (12th gestational week), second (24th ± 2 gestational weeks), and third (at 32nd gestational week) trimester of gestation, respectively.